diff --git a/.gcloudignore b/.gcloudignore
new file mode 100644
index 0000000..5a616cb
--- /dev/null
+++ b/.gcloudignore
@@ -0,0 +1,17 @@
+# This file specifies files that are *not* uploaded to Google Cloud
+# using gcloud. It follows the same syntax as .gitignore, with the addition of
+# "#!include" directives (which insert the entries of the given .gitignore-style
+# file at that point).
+#
+# For more information, run:
+#   $ gcloud topic gcloudignore
+#
+.gcloudignore
+# If you would like to upload your .git directory, .gitignore file or files
+# from your .gitignore file, remove the corresponding line
+# below:
+.git
+.gitignore
+
+node_modules
+#!include:.gitignore
diff --git a/backend/.firebaserc b/backend/.firebaserc
new file mode 100644
index 0000000..4227ca1
--- /dev/null
+++ b/backend/.firebaserc
@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "cim-summarizer"
+  }
+} 
\ No newline at end of file
diff --git a/backend/.gcloudignore b/backend/.gcloudignore
new file mode 100644
index 0000000..19315ab
--- /dev/null
+++ b/backend/.gcloudignore
@@ -0,0 +1,76 @@
+# This file specifies files that are intentionally untracked by Git.
+# Files matching these patterns will not be uploaded to Cloud Functions
+
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Build outputs
+dist/
+build/
+.next/
+out/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Logs
+logs/
+*.log
+firebase-debug.log
+firebase-debug.*.log
+
+# Test files
+coverage/
+.nyc_output
+*.lcov
+
+# Upload files and temporary data
+uploads/
+temp/
+tmp/
+
+# Documentation and markdown files
+*.md
+AGENTIC_RAG_DATABASE_INTEGRATION.md
+DATABASE.md
+HYBRID_IMPLEMENTATION_SUMMARY.md
+RAG_PROCESSING_README.md
+go-forward-fixes-summary.md
+
+# Scripts and setup files
+*.sh
+setup-env.sh
+fix-env-config.sh
+
+# Database files
+*.sql
+supabase_setup.sql
+
+# IDE and editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Jest configuration
+jest.config.js
+
+# TypeScript config (we only need the transpiled JS)
+tsconfig.json
\ No newline at end of file
diff --git a/backend/.gitignore b/backend/.gitignore
new file mode 100644
index 0000000..1443840
--- /dev/null
+++ b/backend/.gitignore
@@ -0,0 +1,57 @@
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Build outputs
+dist/
+build/
+.next/
+out/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+.env.development
+.env.production
+
+# Logs
+logs/
+*.log
+firebase-debug.log
+firebase-debug.*.log
+
+# Test files
+coverage/
+.nyc_output
+*.lcov
+
+# Upload files and temporary data
+uploads/
+temp/
+tmp/
+
+# IDE and editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Firebase
+.firebase/
+firebase-debug.log*
+firebase-debug.*.log*
\ No newline at end of file
diff --git a/backend/deploy.sh b/backend/deploy.sh
new file mode 100755
index 0000000..afc3795
--- /dev/null
+++ b/backend/deploy.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+set -e
+
+echo "Building TypeScript..."
+npm run build
+
+echo "Deploying function to Firebase..."
+gcloud functions deploy api \
+  --gen2 \
+  --runtime nodejs20 \
+  --region us-central1 \
+  --source . \
+  --entry-point api \
+  --trigger-http \
+  --allow-unauthenticated 
\ No newline at end of file
diff --git a/backend/firebase.json b/backend/firebase.json
new file mode 100644
index 0000000..f4cf4f5
--- /dev/null
+++ b/backend/firebase.json
@@ -0,0 +1,8 @@
+{
+  "functions": {
+    "source": ".",
+    "runtime": "nodejs20",
+    "ignore": ["node_modules"],
+    "predeploy": "npm run build"
+  }
+}
\ No newline at end of file
diff --git a/backend/package-lock.json b/backend/package-lock.json
index 5ed7a90..c33c5e8 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -9,21 +9,18 @@
       "version": "1.0.0",
       "dependencies": {
         "@anthropic-ai/sdk": "^0.57.0",
-        "@langchain/openai": "^0.6.3",
+        "@supabase/supabase-js": "^2.53.0",
         "axios": "^1.11.0",
-        "bcrypt": "^6.0.0",
         "bcryptjs": "^2.4.3",
-        "bull": "^4.12.0",
         "cors": "^2.8.5",
         "dotenv": "^16.3.1",
         "express": "^4.18.2",
         "express-rate-limit": "^7.1.5",
-        "express-validator": "^7.0.1",
-        "form-data": "^4.0.4",
+        "firebase-admin": "^13.4.0",
+        "firebase-functions": "^6.4.0",
         "helmet": "^7.1.0",
         "joi": "^17.11.0",
         "jsonwebtoken": "^9.0.2",
-        "langchain": "^0.3.30",
         "morgan": "^1.10.0",
         "multer": "^1.4.5-lts.1",
         "openai": "^5.10.2",
@@ -595,13 +592,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@cfworker/json-schema": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/@cfworker/json-schema/-/json-schema-4.1.1.tgz",
-      "integrity": "sha512-gAmrUZSGtKc3AiBL71iNWxDsyUC5uMaKKGdvzYsBoTW/xi42JQHl7eKV2OYzCUqvc+D2RCcf7EXY2iCyFIk6og==",
-      "license": "MIT",
-      "peer": true
-    },
     "node_modules/@colors/colors": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/@colors/colors/-/colors-1.6.0.tgz",
@@ -733,6 +723,247 @@
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       }
     },
+    "node_modules/@fastify/busboy": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-3.1.1.tgz",
+      "integrity": "sha512-5DGmA8FTdB2XbDeEwc/5ZXBl6UbBAyBOOLlPuBnZ/N1SwdH9Ii+cOX3tBROlDgcTXxjOYnLMVoKk9+FXAw0CJw==",
+      "license": "MIT"
+    },
+    "node_modules/@firebase/app-check-interop-types": {
+      "version": "0.3.3",
+      "resolved": "https://registry.npmjs.org/@firebase/app-check-interop-types/-/app-check-interop-types-0.3.3.tgz",
+      "integrity": "sha512-gAlxfPLT2j8bTI/qfe3ahl2I2YcBQ8cFIBdhAQA4I2f3TndcO+22YizyGYuttLHPQEpWkhmpFW60VCFEPg4g5A==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/app-types": {
+      "version": "0.9.3",
+      "resolved": "https://registry.npmjs.org/@firebase/app-types/-/app-types-0.9.3.tgz",
+      "integrity": "sha512-kRVpIl4vVGJ4baogMDINbyrIOtOxqhkZQg4jTq3l8Lw6WSk0xfpEYzezFu+Kl4ve4fbPl79dvwRtaFqAC/ucCw==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/auth-interop-types": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/@firebase/auth-interop-types/-/auth-interop-types-0.2.4.tgz",
+      "integrity": "sha512-JPgcXKCuO+CWqGDnigBtvo09HeBs5u/Ktc2GaFj2m01hLarbxthLNm7Fk8iOP1aqAtXV+fnnGj7U28xmk7IwVA==",
+      "license": "Apache-2.0"
+    },
+    "node_modules/@firebase/component": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/@firebase/component/-/component-0.7.0.tgz",
+      "integrity": "sha512-wR9En2A+WESUHexjmRHkqtaVH94WLNKt6rmeqZhSLBybg4Wyf0Umk04SZsS6sBq4102ZsDBFwoqMqJYj2IoDSg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/util": "1.13.0",
+        "tslib": "^2.1.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@firebase/database": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/@firebase/database/-/database-1.1.0.tgz",
+      "integrity": "sha512-gM6MJFae3pTyNLoc9VcJNuaUDej0ctdjn3cVtILo3D5lpp0dmUHHLFN/pUKe7ImyeB1KAvRlEYxvIHNF04Filg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/app-check-interop-types": "0.3.3",
+        "@firebase/auth-interop-types": "0.2.4",
+        "@firebase/component": "0.7.0",
+        "@firebase/logger": "0.5.0",
+        "@firebase/util": "1.13.0",
+        "faye-websocket": "0.11.4",
+        "tslib": "^2.1.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    },
+    "node_modules/@firebase/database-compat": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@firebase/database-compat/-/database-compat-2.1.0.tgz",
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+      "license": "Apache-2.0",
+      "dependencies": {
+        "@firebase/component": "0.7.0",
+        "@firebase/database": "1.1.0",
+        "@firebase/database-types": "1.0.16",
+        "@firebase/logger": "0.5.0",
+        "@firebase/util": "1.13.0",
+        "tslib": "^2.1.0"
+      },
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+      "resolved": "https://registry.npmjs.org/@firebase/database-types/-/database-types-1.0.16.tgz",
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+      "license": "Apache-2.0",
+      "dependencies": {
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+        "@firebase/util": "1.13.0"
+      }
+    },
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+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/@firebase/logger/-/logger-0.5.0.tgz",
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+      "license": "Apache-2.0",
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+      },
+      "engines": {
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+      "license": "Apache-2.0",
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+        "tslib": "^2.1.0"
+      },
+      "engines": {
+        "node": ">=20.0.0"
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+      "optional": true,
+      "dependencies": {
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+      },
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+        "node": ">=14.0.0"
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+      "optional": true,
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+        "extend": "^3.0.2"
+      },
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+      "license": "Apache-2.0",
+      "optional": true,
+      "engines": {
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+      "license": "Apache-2.0",
+      "optional": true,
+      "engines": {
+        "node": ">=14"
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+    },
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+      "resolved": "https://registry.npmjs.org/@google-cloud/storage/-/storage-7.16.0.tgz",
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+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "@google-cloud/paginator": "^5.0.0",
+        "@google-cloud/projectify": "^4.0.0",
+        "@google-cloud/promisify": "<4.1.0",
+        "abort-controller": "^3.0.0",
+        "async-retry": "^1.3.3",
+        "duplexify": "^4.1.3",
+        "fast-xml-parser": "^4.4.1",
+        "gaxios": "^6.0.2",
+        "google-auth-library": "^9.6.3",
+        "html-entities": "^2.5.2",
+        "mime": "^3.0.0",
+        "p-limit": "^3.0.1",
+        "retry-request": "^7.0.0",
+        "teeny-request": "^9.0.0",
+        "uuid": "^8.0.0"
+      },
+      "engines": {
+        "node": ">=14"
+      }
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+      "license": "MIT",
+      "optional": true,
+      "bin": {
+        "mime": "cli.js"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/@google-cloud/storage/node_modules/uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+      "license": "MIT",
+      "optional": true,
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
+    "node_modules/@grpc/grpc-js": {
+      "version": "1.13.4",
+      "resolved": "https://registry.npmjs.org/@grpc/grpc-js/-/grpc-js-1.13.4.tgz",
+      "integrity": "sha512-GsFaMXCkMqkKIvwCQjCrwH+GHbPKBjhwo/8ZuUkWHqbI73Kky9I+pQltrlT0+MWpedCoosda53lgjYfyEPgxBg==",
+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "@grpc/proto-loader": "^0.7.13",
+        "@js-sdsl/ordered-map": "^4.4.2"
+      },
+      "engines": {
+        "node": ">=12.10.0"
+      }
+    },
+    "node_modules/@grpc/proto-loader": {
+      "version": "0.7.15",
+      "resolved": "https://registry.npmjs.org/@grpc/proto-loader/-/proto-loader-0.7.15.tgz",
+      "integrity": "sha512-tMXdRCfYVixjuFK+Hk0Q1s38gV9zDiDJfWL3h1rv4Qc39oILCu1TRTDt7+fGUI8K4G1Fj125Hx/ru3azECWTyQ==",
+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
+        "lodash.camelcase": "^4.3.0",
+        "long": "^5.0.0",
+        "protobufjs": "^7.2.5",
+        "yargs": "^17.7.2"
+      },
+      "bin": {
+        "proto-loader-gen-types": "build/bin/proto-loader-gen-types.js"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/@hapi/hoek": {
       "version": "9.3.0",
       "resolved": "https://registry.npmjs.org/@hapi/hoek/-/hoek-9.3.0.tgz",
@@ -810,12 +1041,6 @@
       "dev": true,
       "license": "BSD-3-Clause"
     },
-    "node_modules/@ioredis/commands": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/@ioredis/commands/-/commands-1.2.0.tgz",
-      "integrity": "sha512-Sx1pU8EM64o2BrqNpEO1CNLtKQwyhuXuqyfH7oGKCk+1a33d2r5saW8zNwm3j6BTExtjrv2BxTgzzkMwts6vGg==",
-      "license": "MIT"
-    },
     "node_modules/@istanbuljs/load-nyc-config": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@istanbuljs/load-nyc-config/-/load-nyc-config-1.1.0.tgz",
@@ -1271,180 +1496,17 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
-    "node_modules/@langchain/core": {
-      "version": "0.3.66",
-      "resolved": "https://registry.npmjs.org/@langchain/core/-/core-0.3.66.tgz",
-      "integrity": "sha512-d3SgSDOlgOjdIbReIXVQl9HaQzKqO/5+E+o3kJwoKXLGP9dxi7+lMyaII7yv7G8/aUxMWLwFES9zc1jFoeJEZw==",
+    "node_modules/@js-sdsl/ordered-map": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/@js-sdsl/ordered-map/-/ordered-map-4.4.2.tgz",
+      "integrity": "sha512-iUKgm52T8HOE/makSxjqoWhe95ZJA1/G1sYsGev2JDKUSS14KAgg1LHb+Ba+IPow0xflbnSkOsZcO08C7w1gYw==",
       "license": "MIT",
-      "peer": true,
-      "dependencies": {
-        "@cfworker/json-schema": "^4.0.2",
-        "ansi-styles": "^5.0.0",
-        "camelcase": "6",
-        "decamelize": "1.2.0",
-        "js-tiktoken": "^1.0.12",
-        "langsmith": "^0.3.46",
-        "mustache": "^4.2.0",
-        "p-queue": "^6.6.2",
-        "p-retry": "4",
-        "uuid": "^10.0.0",
-        "zod": "^3.25.32",
-        "zod-to-json-schema": "^3.22.3"
-      },
-      "engines": {
-        "node": ">=18"
-      }
-    },
-    "node_modules/@langchain/core/node_modules/ansi-styles": {
-      "version": "5.2.0",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-5.2.0.tgz",
-      "integrity": "sha512-Cxwpt2SfTzTtXcfOlzGEee8O+c+MmUgGrNiBcXnuWxuFJHe6a5Hz7qwhwe5OgaSYI0IJvkLqWX1ASG+cJOkEiA==",
-      "license": "MIT",
-      "peer": true,
-      "engines": {
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@@ -7465,6 +7752,43 @@
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+      "license": "BSD-3-Clause",
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+        "@protobufjs/base64": "^1.1.2",
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+      "optional": true,
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+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@types/request": "^2.48.8",
+        "extend": "^3.0.2",
+        "teeny-request": "^9.0.0"
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@@ -8278,6 +8585,23 @@
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+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
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+      }
+    },
+    "node_modules/stream-shift": {
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+      "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.3.tgz",
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+      "license": "MIT",
+      "optional": true
+    },
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@@ -8387,6 +8711,26 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/strnum": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/strnum/-/strnum-1.1.2.tgz",
+      "integrity": "sha512-vrN+B7DBIoTTZjnPNewwhx6cBA/H+IS7rfW68n7XxC1y7uoiGQBxaKzqucGUgavX15dJgiGztLJ8vxuEzwqBdA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT",
+      "optional": true
+    },
+    "node_modules/stubs": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/stubs/-/stubs-3.0.0.tgz",
+      "integrity": "sha512-PdHt7hHUJKxvTCgbKX9C1V/ftOcjJQgz8BZwNfV5c4B6dcGqlpelTbJ999jBGZ2jYiPAwcX5dP6oBwVlBlUbxw==",
+      "license": "MIT",
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+    },
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+      "dev": true,
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@@ -8485,6 +8830,79 @@
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+    "node_modules/teeny-request": {
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+      "license": "Apache-2.0",
+      "optional": true,
+      "dependencies": {
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+        "https-proxy-agent": "^5.0.0",
+        "node-fetch": "^2.6.9",
+        "stream-events": "^1.0.5",
+        "uuid": "^9.0.0"
+      },
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+        "node": ">=14"
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+    "node_modules/teeny-request/node_modules/agent-base": {
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+      "optional": true,
+      "dependencies": {
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
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+    "node_modules/teeny-request/node_modules/http-proxy-agent": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-5.0.0.tgz",
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+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "@tootallnate/once": "2",
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
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+    "node_modules/teeny-request/node_modules/https-proxy-agent": {
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+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
+      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
+      "license": "MIT",
+      "optional": true,
+      "dependencies": {
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/teeny-request/node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "optional": true,
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/test-exclude": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-6.0.0.tgz",
@@ -8913,7 +9331,6 @@
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-      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/unpipe": {
@@ -9022,15 +9439,6 @@
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       }
     },
-    "node_modules/validator": {
-      "version": "13.12.0",
-      "resolved": "https://registry.npmjs.org/validator/-/validator-13.12.0.tgz",
-      "integrity": "sha512-c1Q0mCiPlgdTVVVIJIrBuxNicYE+t/7oKeI9MWLj3fh/uq2Pxh/3eeWbVZ4OcGW1TUf53At0njHw5SMdA3tmMg==",
-      "license": "MIT",
-      "engines": {
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@@ -9056,6 +9464,29 @@
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       "license": "BSD-2-Clause"
     },
+    "node_modules/websocket-driver": {
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
+      "integrity": "sha512-b17KeDIQVjvb0ssuSDF2cYXSg2iztliJ4B9WdsuB6J952qCPKmnVq4DyW5motImXHDC1cBT/1UezrJVsKw5zjg==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "http-parser-js": ">=0.5.1",
+        "safe-buffer": ">=5.1.0",
+        "websocket-extensions": ">=0.1.1"
+      },
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/websocket-extensions": {
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/websocket-extensions/-/websocket-extensions-0.1.4.tgz",
+      "integrity": "sha512-OqedPIGOfsDlo31UNwYbCFMSaO9m9G/0faIHj5/dZFDMFqPTcx6UwqyOy3COEaEOg/9VsGIpdqn62W5KhoKSpg==",
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
     "node_modules/whatwg-url": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
@@ -9198,8 +9629,6 @@
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       "license": "MIT",
-      "optional": true,
-      "peer": true,
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       },
@@ -9241,18 +9670,6 @@
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       "license": "ISC"
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-    "node_modules/yaml": {
-      "version": "2.8.0",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.8.0.tgz",
-      "integrity": "sha512-4lLa/EcQCB0cJkyts+FpIRx5G/llPxfP6VQU5KByHEhLxY3IJCH0f0Hy1MHI8sClTvsIb8qwRJ6R/ZdlDJ/leQ==",
-      "license": "ISC",
-      "bin": {
-        "yaml": "bin.mjs"
-      },
-      "engines": {
-        "node": ">= 14.6"
-      }
-    },
     "node_modules/yargs": {
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       "resolved": "https://registry.npmjs.org/yargs/-/yargs-17.7.2.tgz",
@@ -9304,7 +9721,7 @@
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-      "dev": true,
+      "devOptional": true,
       "license": "MIT",
       "engines": {
         "node": ">=10"
@@ -9321,16 +9738,6 @@
       "funding": {
         "url": "https://github.com/sponsors/colinhacks"
       }
-    },
-    "node_modules/zod-to-json-schema": {
-      "version": "3.24.6",
-      "resolved": "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.24.6.tgz",
-      "integrity": "sha512-h/z3PKvcTcTetyjl1fkj79MHNEjm+HpD6NXheWjzOekY7kV+lwDYnHw+ivHkijnCSMz1yJaWBD9vu/Fcmk+vEg==",
-      "license": "ISC",
-      "peer": true,
-      "peerDependencies": {
-        "zod": "^3.24.1"
-      }
     }
   }
 }
diff --git a/backend/package.json b/backend/package.json
index e97fd7a..980e868 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -17,12 +17,15 @@
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.57.0",
+    "@supabase/supabase-js": "^2.53.0",
     "axios": "^1.11.0",
     "bcryptjs": "^2.4.3",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
     "express": "^4.18.2",
     "express-rate-limit": "^7.1.5",
+    "firebase-admin": "^13.4.0",
+    "firebase-functions": "^6.4.0",
     "helmet": "^7.1.0",
     "joi": "^17.11.0",
     "jsonwebtoken": "^9.0.2",
diff --git a/backend/src/config/env.ts b/backend/src/config/env.ts
index 665127c..3a884f4 100644
--- a/backend/src/config/env.ts
+++ b/backend/src/config/env.ts
@@ -9,23 +9,28 @@ const envSchema = Joi.object({
   NODE_ENV: Joi.string().valid('development', 'production', 'test').default('development'),
   PORT: Joi.number().default(5000),
   
-  // Database
-  DATABASE_URL: Joi.string().required(),
+  // Database - Made optional for Firebase deployment with Supabase
+  DATABASE_URL: Joi.string().allow('').default(''),
   DB_HOST: Joi.string().default('localhost'),
   DB_PORT: Joi.number().default(5432),
-  DB_NAME: Joi.string().required(),
-  DB_USER: Joi.string().required(),
-  DB_PASSWORD: Joi.string().required(),
+  DB_NAME: Joi.string().allow('').default(''),
+  DB_USER: Joi.string().allow('').default(''),
+  DB_PASSWORD: Joi.string().allow('').default(''),
+  
+  // Supabase Configuration
+  SUPABASE_URL: Joi.string().allow('').optional(),
+  SUPABASE_ANON_KEY: Joi.string().allow('').optional(),
+  SUPABASE_SERVICE_KEY: Joi.string().allow('').optional(),
   
   // Redis
   REDIS_URL: Joi.string().default('redis://localhost:6379'),
   REDIS_HOST: Joi.string().default('localhost'),
   REDIS_PORT: Joi.number().default(6379),
   
-  // JWT
-  JWT_SECRET: Joi.string().required(),
+  // JWT - Optional for Firebase Auth
+  JWT_SECRET: Joi.string().default('default-jwt-secret-change-in-production'),
   JWT_EXPIRES_IN: Joi.string().default('1h'),
-  JWT_REFRESH_SECRET: Joi.string().required(),
+  JWT_REFRESH_SECRET: Joi.string().default('default-refresh-secret-change-in-production'),
   JWT_REFRESH_EXPIRES_IN: Joi.string().default('7d'),
   
   // File Upload
@@ -137,6 +142,12 @@ export const config = {
     password: envVars.DB_PASSWORD,
   },
   
+  supabase: {
+    url: envVars.SUPABASE_URL,
+    anonKey: envVars.SUPABASE_ANON_KEY,
+    serviceKey: envVars.SUPABASE_SERVICE_KEY,
+  },
+  
   redis: {
     url: envVars.REDIS_URL,
     host: envVars.REDIS_HOST,
@@ -260,7 +271,7 @@ export const config = {
   
   // Vector Database Configuration
   vector: {
-    provider: envVars['VECTOR_PROVIDER'] || 'pgvector', // 'pinecone' | 'pgvector' | 'chroma'
+    provider: envVars['VECTOR_PROVIDER'] || 'supabase', // 'pinecone' | 'pgvector' | 'chroma' | 'supabase'
     
     // Pinecone Configuration
     pineconeApiKey: envVars['PINECONE_API_KEY'],
diff --git a/backend/src/config/errorConfig.ts b/backend/src/config/errorConfig.ts
new file mode 100644
index 0000000..53b9d93
--- /dev/null
+++ b/backend/src/config/errorConfig.ts
@@ -0,0 +1,47 @@
+export const errorConfig = {
+  // Authentication timeouts
+  auth: {
+    tokenRefreshInterval: 45 * 60 * 1000, // 45 minutes
+    sessionTimeout: 60 * 60 * 1000, // 1 hour
+    maxRetryAttempts: 3,
+  },
+  
+  // Upload timeouts
+  upload: {
+    maxUploadTime: 300000, // 5 minutes
+    maxFileSize: 100 * 1024 * 1024, // 100MB
+    progressCheckInterval: 2000, // 2 seconds
+  },
+  
+  // Processing timeouts
+  processing: {
+    maxProcessingTime: 1800000, // 30 minutes
+    progressUpdateInterval: 5000, // 5 seconds
+    maxRetries: 3,
+  },
+  
+  // Network timeouts
+  network: {
+    requestTimeout: 30000, // 30 seconds
+    retryDelay: 1000, // 1 second
+    maxRetries: 3,
+  },
+  
+  // Error messages
+  messages: {
+    tokenExpired: 'Your session has expired. Please log in again.',
+    uploadFailed: 'File upload failed. Please try again.',
+    processingFailed: 'Document processing failed. Please try again.',
+    networkError: 'Network error. Please check your connection and try again.',
+    unauthorized: 'You are not authorized to perform this action.',
+    serverError: 'Server error. Please try again later.',
+  },
+  
+  // Logging levels
+  logging: {
+    auth: 'info',
+    upload: 'info',
+    processing: 'info',
+    error: 'error',
+  },
+}; 
\ No newline at end of file
diff --git a/backend/src/config/firebase.ts b/backend/src/config/firebase.ts
new file mode 100644
index 0000000..44c8cf9
--- /dev/null
+++ b/backend/src/config/firebase.ts
@@ -0,0 +1,49 @@
+import admin from 'firebase-admin';
+
+// Initialize Firebase Admin SDK
+if (!admin.apps.length) {
+  try {
+    // Check if we're running in Firebase Functions environment
+    const isCloudFunction = process.env['FUNCTION_TARGET'] || process.env['FUNCTIONS_EMULATOR'];
+    
+    if (isCloudFunction) {
+      // In Firebase Functions, use default initialization
+      admin.initializeApp({
+        projectId: process.env['GCLOUD_PROJECT'] || 'cim-summarizer',
+      });
+      console.log('Firebase Admin SDK initialized for Cloud Functions');
+    } else {
+      // For local development, try to use service account key if available
+      try {
+        const serviceAccount = require('../../serviceAccountKey.json');
+        admin.initializeApp({
+          credential: admin.credential.cert(serviceAccount),
+          projectId: 'cim-summarizer',
+        });
+        console.log('Firebase Admin SDK initialized with service account');
+      } catch (serviceAccountError) {
+        // Fallback to default initialization
+        admin.initializeApp({
+          projectId: 'cim-summarizer',
+        });
+        console.log('Firebase Admin SDK initialized with default credentials');
+      }
+    }
+    
+    console.log('Firebase apps count:', admin.apps.length);
+    console.log('Project ID:', admin.app().options.projectId);
+  } catch (error) {
+    console.error('Failed to initialize Firebase Admin SDK:', error);
+    
+    // Final fallback: try with minimal config
+    try {
+      admin.initializeApp();
+      console.log('Firebase Admin SDK initialized with minimal fallback');
+    } catch (fallbackError) {
+      console.error('All Firebase initialization attempts failed:', fallbackError);
+      // Don't throw here to prevent the entire app from crashing
+    }
+  }
+}
+
+export default admin; 
\ No newline at end of file
diff --git a/backend/src/config/supabase.ts b/backend/src/config/supabase.ts
new file mode 100644
index 0000000..4ea52fe
--- /dev/null
+++ b/backend/src/config/supabase.ts
@@ -0,0 +1,56 @@
+import { createClient, SupabaseClient } from '@supabase/supabase-js';
+import { config } from './env';
+import { logger } from '../utils/logger';
+
+let supabase: SupabaseClient | null = null;
+
+export const getSupabaseClient = (): SupabaseClient => {
+  if (!supabase) {
+    const supabaseUrl = config.supabase?.url;
+    const supabaseKey = config.supabase?.anonKey;
+
+    if (!supabaseUrl || !supabaseKey) {
+      logger.warn('Supabase credentials not configured, some features may not work');
+      throw new Error('Supabase configuration missing');
+    }
+
+    supabase = createClient(supabaseUrl, supabaseKey);
+    logger.info('Supabase client initialized');
+  }
+
+  return supabase;
+};
+
+export const getSupabaseServiceClient = (): SupabaseClient => {
+  const supabaseUrl = config.supabase?.url;
+  const supabaseServiceKey = config.supabase?.serviceKey;
+
+  if (!supabaseUrl || !supabaseServiceKey) {
+    logger.warn('Supabase service credentials not configured');
+    throw new Error('Supabase service configuration missing');
+  }
+
+  return createClient(supabaseUrl, supabaseServiceKey);
+};
+
+// Test connection function
+export const testSupabaseConnection = async (): Promise<boolean> => {
+  try {
+    const client = getSupabaseClient();
+    const { error } = await client.from('_health_check').select('*').limit(1);
+    
+    // If the table doesn't exist, that's fine - we just tested the connection
+    if (error && !error.message.includes('relation "_health_check" does not exist')) {
+      logger.error('Supabase connection test failed:', error);
+      return false;
+    }
+    
+    logger.info('Supabase connection test successful');
+    return true;
+  } catch (error) {
+    logger.error('Supabase connection test failed:', error);
+    return false;
+  }
+};
+
+export default getSupabaseClient;
\ No newline at end of file
diff --git a/backend/src/controllers/authController.ts b/backend/src/controllers/authController.ts
index 86b16eb..46a2f21 100644
--- a/backend/src/controllers/authController.ts
+++ b/backend/src/controllers/authController.ts
@@ -1,14 +1,5 @@
 import { Request, Response } from 'express';
 import { AuthenticatedRequest } from '../middleware/auth';
-import { UserModel } from '../models/UserModel';
-import { 
-  generateAuthTokens, 
-  verifyRefreshToken, 
-  hashPassword, 
-  comparePassword, 
-  validatePassword 
-} from '../utils/auth';
-import { sessionService } from '../services/sessionService';
 import logger from '../utils/logger';
 
 export interface RegisterRequest extends Request {
@@ -33,432 +24,106 @@ export interface RefreshTokenRequest extends Request {
 }
 
 /**
- * Register a new user
+ * DEPRECATED: Legacy auth controller
+ * All auth functions are now handled by Firebase Auth
  */
-export async function register(req: RegisterRequest, res: Response): Promise<void> {
-  try {
-    const { email, name, password } = req.body;
-
-    // Validate input
-    if (!email || !name || !password) {
-      res.status(400).json({
-        success: false,
-        message: 'Email, name, and password are required'
-      });
-      return;
-    }
-
-    // Validate email format
-    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
-    if (!emailRegex.test(email)) {
-      res.status(400).json({
-        success: false,
-        message: 'Invalid email format'
-      });
-      return;
-    }
-
-    // Validate password strength
-    const passwordValidation = validatePassword(password);
-    if (!passwordValidation.isValid) {
-      res.status(400).json({
-        success: false,
-        message: 'Password does not meet requirements',
-        errors: passwordValidation.errors
-      });
-      return;
-    }
-
-    // Check if user already exists
-    const existingUser = await UserModel.findByEmail(email);
-    if (existingUser) {
-      res.status(409).json({
-        success: false,
-        message: 'User with this email already exists'
-      });
-      return;
-    }
-
-    // Hash password
-    const hashedPassword = await hashPassword(password);
-
-    // Create user
-    const user = await UserModel.create({
-      email,
-      name,
-      password: hashedPassword,
-      role: 'user'
-    });
-
-    // Generate tokens
-    const tokens = generateAuthTokens({
-      userId: user.id,
-      email: user.email,
-      role: user.role
-    });
-
-    // Store session
-    await sessionService.storeSession(user.id, {
-      userId: user.id,
-      email: user.email,
-      role: user.role,
-      refreshToken: tokens.refreshToken
-    });
-
-    logger.info(`New user registered: ${email}`);
-
-    res.status(201).json({
-      success: true,
-      message: 'User registered successfully',
-      data: {
-        user: {
-          id: user.id,
-          email: user.email,
-          name: user.name,
-          role: user.role
-        },
-        tokens: {
-          accessToken: tokens.accessToken,
-          refreshToken: tokens.refreshToken,
-          expiresIn: tokens.expiresIn
-        }
-      }
-    });
-  } catch (error) {
-    logger.error('Registration error:', error);
-    res.status(500).json({
+export const authController = {
+  async register(_req: RegisterRequest, res: Response): Promise<void> {
+    logger.warn('Legacy register endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
       success: false,
-      message: 'Internal server error during registration'
+      message: 'Legacy registration is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async login(_req: LoginRequest, res: Response): Promise<void> {
+    logger.warn('Legacy login endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy login is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async refreshToken(_req: RefreshTokenRequest, res: Response): Promise<void> {
+    logger.warn('Legacy refresh token endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy token refresh is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async logout(_req: AuthenticatedRequest, res: Response): Promise<void> {
+    logger.warn('Legacy logout endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy logout is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async getProfile(_req: AuthenticatedRequest, res: Response): Promise<void> {
+    logger.warn('Legacy profile endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy profile access is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async updateProfile(_req: AuthenticatedRequest, res: Response): Promise<void> {
+    logger.warn('Legacy profile update endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy profile updates are disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async changePassword(_req: AuthenticatedRequest, res: Response): Promise<void> {
+    logger.warn('Legacy password change endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy password changes are disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async deleteAccount(_req: AuthenticatedRequest, res: Response): Promise<void> {
+    logger.warn('Legacy account deletion endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy account deletion is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async verifyEmail(_req: Request, res: Response): Promise<void> {
+    logger.warn('Legacy email verification endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy email verification is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async requestPasswordReset(_req: Request, res: Response): Promise<void> {
+    logger.warn('Legacy password reset endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy password reset is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
+    });
+  },
+
+  async resetPassword(_req: Request, res: Response): Promise<void> {
+    logger.warn('Legacy password reset endpoint is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy password reset is disabled. Use Firebase Auth instead.',
+      error: 'DEPRECATED_ENDPOINT'
     });
   }
-}
-
-/**
- * Login user
- */
-export async function login(req: LoginRequest, res: Response): Promise<void> {
-  try {
-    const { email, password } = req.body;
-
-    // Validate input
-    if (!email || !password) {
-      res.status(400).json({
-        success: false,
-        message: 'Email and password are required'
-      });
-      return;
-    }
-
-    // Find user by email
-    const user = await UserModel.findByEmail(email);
-    if (!user) {
-      res.status(401).json({
-        success: false,
-        message: 'Invalid email or password'
-      });
-      return;
-    }
-
-    // Check if user is active
-    if (!user.is_active) {
-      res.status(401).json({
-        success: false,
-        message: 'Account is deactivated'
-      });
-      return;
-    }
-
-    // Verify password
-    const isPasswordValid = await comparePassword(password, user.password_hash);
-    if (!isPasswordValid) {
-      res.status(401).json({
-        success: false,
-        message: 'Invalid email or password'
-      });
-      return;
-    }
-
-    // Generate tokens
-    const tokens = generateAuthTokens({
-      userId: user.id,
-      email: user.email,
-      role: user.role
-    });
-
-    // Store session
-    await sessionService.storeSession(user.id, {
-      userId: user.id,
-      email: user.email,
-      role: user.role,
-      refreshToken: tokens.refreshToken
-    });
-
-    // Update last login
-    await UserModel.updateLastLogin(user.id);
-
-    logger.info(`User logged in: ${email}`);
-
-    res.status(200).json({
-      success: true,
-      message: 'Login successful',
-      data: {
-        user: {
-          id: user.id,
-          email: user.email,
-          name: user.name,
-          role: user.role
-        },
-        tokens: {
-          accessToken: tokens.accessToken,
-          refreshToken: tokens.refreshToken,
-          expiresIn: tokens.expiresIn
-        }
-      }
-    });
-  } catch (error) {
-    logger.error('Login error:', error);
-    res.status(500).json({
-      success: false,
-      message: 'Internal server error during login'
-    });
-  }
-}
-
-/**
- * Logout user
- */
-export async function logout(req: AuthenticatedRequest, res: Response): Promise<void> {
-  try {
-    if (!req.user) {
-      res.status(401).json({
-        success: false,
-        message: 'Authentication required'
-      });
-      return;
-    }
-
-    // Get the token from header for blacklisting
-    const authHeader = req.headers.authorization;
-    if (authHeader) {
-      const token = authHeader.split(' ')[1];
-      if (token) {
-        // Blacklist the access token
-        await sessionService.blacklistToken(token, 3600); // 1 hour
-      }
-    }
-
-    // Remove session
-    await sessionService.removeSession(req.user.id);
-
-    logger.info(`User logged out: ${req.user.email}`);
-
-    res.status(200).json({
-      success: true,
-      message: 'Logout successful'
-    });
-  } catch (error) {
-    logger.error('Logout error:', error);
-    res.status(500).json({
-      success: false,
-      message: 'Internal server error during logout'
-    });
-  }
-}
-
-/**
- * Refresh access token
- */
-export async function refreshToken(req: RefreshTokenRequest, res: Response): Promise<void> {
-  try {
-    const { refreshToken } = req.body;
-
-    if (!refreshToken) {
-      res.status(400).json({
-        success: false,
-        message: 'Refresh token is required'
-      });
-      return;
-    }
-
-    // Verify refresh token
-    const decoded = verifyRefreshToken(refreshToken);
-
-    // Check if user exists and is active
-    const user = await UserModel.findById(decoded.userId);
-    if (!user || !user.is_active) {
-      res.status(401).json({
-        success: false,
-        message: 'Invalid refresh token'
-      });
-      return;
-    }
-
-    // Check if session exists and matches
-    const session = await sessionService.getSession(decoded.userId);
-    if (!session || session.refreshToken !== refreshToken) {
-      res.status(401).json({
-        success: false,
-        message: 'Invalid refresh token'
-      });
-      return;
-    }
-
-    // Generate new tokens
-    const tokens = generateAuthTokens({
-      userId: user.id,
-      email: user.email,
-      role: user.role
-    });
-
-    // Update session with new refresh token
-    await sessionService.storeSession(user.id, {
-      userId: user.id,
-      email: user.email,
-      role: user.role,
-      refreshToken: tokens.refreshToken
-    });
-
-    // Blacklist old refresh token
-    await sessionService.blacklistToken(refreshToken, 86400); // 24 hours
-
-    logger.info(`Token refreshed for user: ${user.email}`);
-
-    res.status(200).json({
-      success: true,
-      message: 'Token refreshed successfully',
-      data: {
-        tokens: {
-          accessToken: tokens.accessToken,
-          refreshToken: tokens.refreshToken,
-          expiresIn: tokens.expiresIn
-        }
-      }
-    });
-  } catch (error) {
-    logger.error('Token refresh error:', error);
-    res.status(401).json({
-      success: false,
-      message: 'Invalid refresh token'
-    });
-  }
-}
-
-/**
- * Get current user profile
- */
-export async function getProfile(req: AuthenticatedRequest, res: Response): Promise<void> {
-  try {
-    if (!req.user) {
-      res.status(401).json({
-        success: false,
-        message: 'Authentication required'
-      });
-      return;
-    }
-
-    const user = await UserModel.findById(req.user.id);
-    if (!user) {
-      res.status(404).json({
-        success: false,
-        message: 'User not found'
-      });
-      return;
-    }
-
-    res.status(200).json({
-      success: true,
-      data: {
-        user: {
-          id: user.id,
-          email: user.email,
-          name: user.name,
-          role: user.role,
-          created_at: user.created_at,
-          last_login: user.last_login
-        }
-      }
-    });
-  } catch (error) {
-    logger.error('Get profile error:', error);
-    res.status(500).json({
-      success: false,
-      message: 'Internal server error'
-    });
-  }
-}
-
-/**
- * Update user profile
- */
-export async function updateProfile(req: AuthenticatedRequest, res: Response): Promise<void> {
-  try {
-    if (!req.user) {
-      res.status(401).json({
-        success: false,
-        message: 'Authentication required'
-      });
-      return;
-    }
-
-    const { name, email } = req.body;
-
-    // Validate input
-    if (email) {
-      const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
-      if (!emailRegex.test(email)) {
-        res.status(400).json({
-          success: false,
-          message: 'Invalid email format'
-        });
-        return;
-      }
-
-      // Check if email is already taken by another user
-      const existingUser = await UserModel.findByEmail(email);
-      if (existingUser && existingUser.id !== req.user.id) {
-        res.status(409).json({
-          success: false,
-          message: 'Email is already taken'
-        });
-        return;
-      }
-    }
-
-    // Update user
-    const updatedUser = await UserModel.update(req.user.id, {
-      name: name || undefined,
-      email: email || undefined
-    });
-
-    if (!updatedUser) {
-      res.status(404).json({
-        success: false,
-        message: 'User not found'
-      });
-      return;
-    }
-
-    logger.info(`Profile updated for user: ${req.user.email}`);
-
-    res.status(200).json({
-      success: true,
-      message: 'Profile updated successfully',
-      data: {
-        user: {
-          id: updatedUser.id,
-          email: updatedUser.email,
-          name: updatedUser.name,
-          role: updatedUser.role,
-          created_at: updatedUser.created_at,
-          last_login: updatedUser.last_login
-        }
-      }
-    });
-  } catch (error) {
-    logger.error('Update profile error:', error);
-    res.status(500).json({
-      success: false,
-      message: 'Internal server error'
-    });
-  }
-} 
\ No newline at end of file
+};
\ No newline at end of file
diff --git a/backend/src/controllers/documentController.ts b/backend/src/controllers/documentController.ts
index 857df67..d7f1c49 100644
--- a/backend/src/controllers/documentController.ts
+++ b/backend/src/controllers/documentController.ts
@@ -8,7 +8,7 @@ import { uploadProgressService } from '../services/uploadProgressService';
 export const documentController = {
   async uploadDocument(req: Request, res: Response): Promise<void> {
     try {
-      const userId = req.user?.id;
+      const userId = req.user?.uid;
       if (!userId) {
         res.status(401).json({ error: 'User not authenticated' });
         return;
@@ -85,7 +85,7 @@ export const documentController = {
 
   async getDocuments(req: Request, res: Response): Promise<void> {
     try {
-      const userId = req.user?.id;
+      const userId = req.user?.uid;
       if (!userId) {
         res.status(401).json({ error: 'User not authenticated' });
         return;
@@ -116,7 +116,7 @@ export const documentController = {
 
   async getDocument(req: Request, res: Response): Promise<void> {
     try {
-      const userId = req.user?.id;
+      const userId = req.user?.uid;
       if (!userId) {
         res.status(401).json({ error: 'User not authenticated' });
         return;
@@ -164,7 +164,7 @@ export const documentController = {
 
   async getDocumentProgress(req: Request, res: Response): Promise<void> {
     try {
-      const userId = req.user?.id;
+      const userId = req.user?.uid;
       if (!userId) {
         res.status(401).json({ error: 'User not authenticated' });
         return;
@@ -219,7 +219,7 @@ export const documentController = {
 
   async deleteDocument(req: Request, res: Response): Promise<void> {
     try {
-      const userId = req.user?.id;
+      const userId = req.user?.uid;
       if (!userId) {
         res.status(401).json({ error: 'User not authenticated' });
         return;
diff --git a/backend/src/index.ts b/backend/src/index.ts
index 50b4d4a..5196d80 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -1,3 +1,6 @@
+// Initialize Firebase Admin SDK first
+import './config/firebase';
+
 import express from 'express';
 import cors from 'cors';
 import helmet from 'helmet';
@@ -5,15 +8,17 @@ import morgan from 'morgan';
 import rateLimit from 'express-rate-limit';
 import { config } from './config/env';
 import { logger } from './utils/logger';
-import authRoutes from './routes/auth';
 import documentRoutes from './routes/documents';
 import vectorRoutes from './routes/vector';
+
 import { errorHandler } from './middleware/errorHandler';
 import { notFoundHandler } from './middleware/notFoundHandler';
-import { jobQueueService } from './services/jobQueueService';
+
 
 const app = express();
-const PORT = config.port || 5000;
+
+// Enable trust proxy to ensure Express works correctly behind the proxy
+app.set('trust proxy', 1);
 
 // Security middleware
 app.use(helmet({
@@ -28,11 +33,27 @@ app.use(helmet({
 }));
 
 // CORS configuration
+const allowedOrigins = [
+  'https://cim-summarizer.web.app',
+  'https://cim-summarizer.firebaseapp.com',
+  'http://localhost:3000',
+  'http://localhost:5173'
+];
+
 app.use(cors({
-  origin: config.frontendUrl || 'http://localhost:3000',
+  origin: function (origin, callback) {
+    console.log('CORS request from origin:', origin);
+    if (!origin || allowedOrigins.indexOf(origin) !== -1) {
+      callback(null, true);
+    } else {
+      console.log('CORS blocked origin:', origin);
+      callback(new Error('Not allowed by CORS'));
+    }
+  },
   credentials: true,
   methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
-  allowedHeaders: ['Content-Type', 'Authorization'],
+  allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
+  optionsSuccessStatus: 200
 }));
 
 // Rate limiting
@@ -97,19 +118,21 @@ app.get('/health/agentic-rag/metrics', async (_req, res) => {
   }
 });
 
-// API routes
-app.use('/api/auth', authRoutes);
-app.use('/api/documents', documentRoutes);
-app.use('/api/vector', vectorRoutes);
+// API routes - remove the /api prefix as it's handled by Firebase
+app.use('/documents', documentRoutes);
+app.use('/vector', vectorRoutes);
+
+
+import * as functions from 'firebase-functions';
 
 // API root endpoint
-app.get('/api', (_req, res) => { // _req to fix TS6133
+app.get('/', (_req, res) => { // _req to fix TS6133
   res.json({
     message: 'CIM Document Processor API',
     version: '1.0.0',
     endpoints: {
-      auth: '/api/auth',
-      documents: '/api/documents',
+      auth: '/auth',
+      documents: '/documents',
       health: '/health',
       agenticRagHealth: '/health/agentic-rag',
       agenticRagMetrics: '/health/agentic-rag/metrics',
@@ -123,51 +146,18 @@ app.use(notFoundHandler);
 // Global error handler (must be last)
 app.use(errorHandler);
 
-// Start server
-const server = app.listen(PORT, () => {
-  logger.info(`🚀 Server running on port ${PORT}`);
-  logger.info(`📊 Environment: ${config.nodeEnv}`);
-  logger.info(`🔗 API URL: http://localhost:${PORT}/api`);
-  logger.info(`🏥 Health check: http://localhost:${PORT}/health`);
-});
+// Initialize job queue service for document processing
+import { jobQueueService } from './services/jobQueueService';
 
-// Start job queue service
-jobQueueService.start();
-logger.info('📋 Job queue service started');
+// Start the job queue service asynchronously to avoid blocking function startup
+// Use a longer delay to ensure the function is fully initialized
+setTimeout(() => {
+  try {
+    jobQueueService.start();
+    logger.info('Job queue service started successfully');
+  } catch (error) {
+    logger.error('Failed to start job queue service', { error });
+  }
+}, 5000);
 
-// Graceful shutdown
-const gracefulShutdown = (signal: string) => {
-  logger.info(`${signal} received, shutting down gracefully`);
-  
-  // Stop accepting new connections
-  server.close(async () => {
-    logger.info('HTTP server closed');
-    
-    // Stop job queue service
-    jobQueueService.stop();
-    logger.info('Job queue service stopped');
-    
-    // Stop upload progress service
-    try {
-      const { uploadProgressService } = await import('./services/uploadProgressService');
-      uploadProgressService.stop();
-      logger.info('Upload progress service stopped');
-    } catch (error) {
-      logger.warn('Could not stop upload progress service', { error });
-    }
-    
-    logger.info('Process terminated');
-    process.exit(0);
-  });
-  
-  // Force close after 30 seconds
-  setTimeout(() => {
-    logger.error('Could not close connections in time, forcefully shutting down');
-    process.exit(1);
-  }, 30000);
-};
-
-process.on('SIGTERM', () => gracefulShutdown('SIGTERM'));
-process.on('SIGINT', () => gracefulShutdown('SIGINT'));
-
-export default app; 
\ No newline at end of file
+export const api = functions.https.onRequest(app); 
\ No newline at end of file
diff --git a/backend/src/middleware/auth.ts b/backend/src/middleware/auth.ts
index 0da5c44..b181157 100644
--- a/backend/src/middleware/auth.ts
+++ b/backend/src/middleware/auth.ts
@@ -1,244 +1,107 @@
 import { Request, Response, NextFunction } from 'express';
-import { verifyAccessToken, extractTokenFromHeader } from '../utils/auth';
-import { sessionService } from '../services/sessionService';
-import { UserModel } from '../models/UserModel';
 import logger from '../utils/logger';
 
 export interface AuthenticatedRequest extends Request {
-  user?: {
-    id: string;
-    email: string;
-    role: string;
-  };
+  user?: import('firebase-admin').auth.DecodedIdToken;
 }
 
 /**
- * Authentication middleware to verify JWT tokens
+ * DEPRECATED: Legacy authentication middleware
+ * Use Firebase Auth instead via ../middleware/firebaseAuth
  */
 export async function authenticateToken(
-  req: AuthenticatedRequest,
+  _req: AuthenticatedRequest,
   res: Response,
-  next: NextFunction
+  _next: NextFunction
 ): Promise<void> {
-  try {
-    const authHeader = req.headers.authorization;
-    const token = extractTokenFromHeader(authHeader);
-
-    if (!token) {
-      res.status(401).json({
-        success: false,
-        message: 'Access token is required'
-      });
-      return;
-    }
-
-    // Check if token is blacklisted
-    const isBlacklisted = await sessionService.isTokenBlacklisted(token);
-    if (isBlacklisted) {
-      res.status(401).json({
-        success: false,
-        message: 'Token has been revoked'
-      });
-      return;
-    }
-
-    // Verify the token
-    const decoded = verifyAccessToken(token);
-    
-    // Check if user still exists and is active
-    const user = await UserModel.findById(decoded.userId);
-    if (!user || !user.is_active) {
-      res.status(401).json({
-        success: false,
-        message: 'User account is inactive or does not exist'
-      });
-      return;
-    }
-
-    // Check if session exists
-    const session = await sessionService.getSession(decoded.userId);
-    if (!session) {
-      res.status(401).json({
-        success: false,
-        message: 'Session expired, please login again'
-      });
-      return;
-    }
-
-    // Attach user info to request
-    req.user = {
-      id: decoded.userId,
-      email: decoded.email,
-      role: decoded.role
-    };
-
-    logger.info(`Authenticated request for user: ${decoded.email}`);
-    next();
-  } catch (error) {
-    logger.error('Authentication error:', error);
-    res.status(401).json({
-      success: false,
-      message: 'Invalid or expired token'
-    });
-  }
+  logger.warn('Legacy auth middleware is deprecated. Use Firebase Auth instead.');
+  res.status(501).json({
+    success: false,
+    message: 'Legacy authentication is disabled. Use Firebase Auth instead.'
+  });
 }
 
 // Alias for backward compatibility
 export const auth = authenticateToken;
 
 /**
- * Role-based authorization middleware
+ * DEPRECATED: Role-based authorization middleware
  */
-export function requireRole(allowedRoles: string[]) {
-  return (req: AuthenticatedRequest, res: Response, next: NextFunction): void => {
-    if (!req.user) {
-      res.status(401).json({
-        success: false,
-        message: 'Authentication required'
-      });
-      return;
-    }
-
-    if (!allowedRoles.includes(req.user.role)) {
-      res.status(403).json({
-        success: false,
-        message: 'Insufficient permissions'
-      });
-      return;
-    }
-
-    logger.info(`Authorized request for user: ${req.user.email} with role: ${req.user.role}`);
-    next();
+export function requireRole(_allowedRoles: string[]) {
+  return (_req: AuthenticatedRequest, res: Response, _next: NextFunction): void => {
+    logger.warn('Legacy role-based auth is deprecated. Use Firebase Auth instead.');
+    res.status(501).json({
+      success: false,
+      message: 'Legacy role-based authentication is disabled. Use Firebase Auth instead.'
+    });
   };
 }
 
 /**
- * Admin-only middleware
+ * DEPRECATED: Admin-only middleware
  */
 export function requireAdmin(
-  req: AuthenticatedRequest,
+  _req: AuthenticatedRequest,
   res: Response,
-  next: NextFunction
+  _next: NextFunction
 ): void {
-  requireRole(['admin'])(req, res, next);
+  logger.warn('Legacy admin auth is deprecated. Use Firebase Auth instead.');
+  res.status(501).json({
+    success: false,
+    message: 'Legacy admin authentication is disabled. Use Firebase Auth instead.'
+  });
 }
 
 /**
- * User or admin middleware
+ * DEPRECATED: User or admin middleware
  */
 export function requireUserOrAdmin(
-  req: AuthenticatedRequest,
+  _req: AuthenticatedRequest,
   res: Response,
-  next: NextFunction
+  _next: NextFunction
 ): void {
-  requireRole(['user', 'admin'])(req, res, next);
+  logger.warn('Legacy user/admin auth is deprecated. Use Firebase Auth instead.');
+  res.status(501).json({
+    success: false,
+    message: 'Legacy user/admin authentication is disabled. Use Firebase Auth instead.'
+  });
 }
 
 /**
- * Optional authentication middleware (doesn't fail if no token)
+ * DEPRECATED: Optional authentication middleware
  */
 export async function optionalAuth(
-  req: AuthenticatedRequest,
+  _req: AuthenticatedRequest,
   _res: Response,
   next: NextFunction
 ): Promise<void> {
-  try {
-    const authHeader = req.headers.authorization;
-    const token = extractTokenFromHeader(authHeader);
-
-    if (!token) {
-      // No token provided, continue without authentication
-      next();
-      return;
-    }
-
-    // Check if token is blacklisted
-    const isBlacklisted = await sessionService.isTokenBlacklisted(token);
-    if (isBlacklisted) {
-      // Token is blacklisted, continue without authentication
-      next();
-      return;
-    }
-
-    // Verify the token
-    const decoded = verifyAccessToken(token);
-    
-    // Check if user still exists and is active
-    const user = await UserModel.findById(decoded.userId);
-    if (!user || !user.is_active) {
-      // User doesn't exist or is inactive, continue without authentication
-      next();
-      return;
-    }
-
-    // Check if session exists
-    const session = await sessionService.getSession(decoded.userId);
-    if (!session) {
-      // Session doesn't exist, continue without authentication
-      next();
-      return;
-    }
-
-    // Attach user info to request
-    req.user = {
-      id: decoded.userId,
-      email: decoded.email,
-      role: decoded.role
-    };
-
-    logger.info(`Optional authentication successful for user: ${decoded.email}`);
-    next();
-  } catch (error) {
-    // Token verification failed, continue without authentication
-    logger.debug('Optional authentication failed, continuing without user context');
-    next();
-  }
+  logger.debug('Legacy optional auth is deprecated. Use Firebase Auth instead.');
+  // For optional auth, we just continue without authentication
+  next();
 }
 
 /**
- * Rate limiting middleware for authentication endpoints
+ * DEPRECATED: Rate limiting middleware
  */
 export function authRateLimit(
   _req: Request,
   _res: Response,
   next: NextFunction
 ): void {
-  // This would typically integrate with a rate limiting library
-  // For now, we'll just pass through
-  // TODO: Implement proper rate limiting
   next();
 }
 
 /**
- * Logout middleware to invalidate session
+ * DEPRECATED: Logout middleware
  */
 export async function logout(
-  req: AuthenticatedRequest,
+  _req: AuthenticatedRequest,
   res: Response,
-  next: NextFunction
+  _next: NextFunction
 ): Promise<void> {
-  try {
-    if (!req.user) {
-      res.status(401).json({
-        success: false,
-        message: 'Authentication required'
-      });
-      return;
-    }
-
-    // Remove session
-    await sessionService.removeSession(req.user.id);
-
-    // Update last login in database
-    await UserModel.updateLastLogin(req.user.id);
-
-    logger.info(`User logged out: ${req.user.email}`);
-    next();
-  } catch (error) {
-    logger.error('Logout error:', error);
-    res.status(500).json({
-      success: false,
-      message: 'Error during logout'
-    });
-  }
-} 
\ No newline at end of file
+  logger.warn('Legacy logout is deprecated. Use Firebase Auth instead.');
+  res.status(501).json({
+    success: false,
+    message: 'Legacy logout is disabled. Use Firebase Auth instead.'
+  });
+}
\ No newline at end of file
diff --git a/backend/src/middleware/firebaseAuth.ts b/backend/src/middleware/firebaseAuth.ts
new file mode 100644
index 0000000..be2ddca
--- /dev/null
+++ b/backend/src/middleware/firebaseAuth.ts
@@ -0,0 +1,116 @@
+import { Request, Response, NextFunction } from 'express';
+import admin from 'firebase-admin';
+import { logger } from '../utils/logger';
+
+// Initialize Firebase Admin if not already initialized
+if (!admin.apps.length) {
+  admin.initializeApp();
+}
+
+export interface FirebaseAuthenticatedRequest extends Request {
+  user?: admin.auth.DecodedIdToken;
+}
+
+export const verifyFirebaseToken = async (
+  req: FirebaseAuthenticatedRequest,
+  res: Response,
+  next: NextFunction
+): Promise<void> => {
+  try {
+    // Debug Firebase Admin initialization
+    console.log('Firebase apps available:', admin.apps.length);
+    console.log('Firebase app names:', admin.apps.filter(app => app !== null).map(app => app!.name));
+    
+    const authHeader = req.headers.authorization;
+    
+    if (!authHeader || !authHeader.startsWith('Bearer ')) {
+      res.status(401).json({ error: 'No valid authorization header' });
+      return;
+    }
+
+    const idToken = authHeader.split('Bearer ')[1];
+    
+    if (!idToken) {
+      res.status(401).json({ error: 'No token provided' });
+      return;
+    }
+
+    // Verify the Firebase ID token
+    const decodedToken = await admin.auth().verifyIdToken(idToken, true);
+    
+    // Check if token is expired
+    const now = Math.floor(Date.now() / 1000);
+    if (decodedToken.exp && decodedToken.exp < now) {
+      logger.warn('Token expired for user:', decodedToken.uid);
+      res.status(401).json({ error: 'Token expired' });
+      return;
+    }
+    
+    req.user = decodedToken;
+    
+    // Log successful authentication
+    logger.info('Authenticated request for user:', decodedToken.email);
+    
+    next();
+  } catch (error: any) {
+    logger.error('Firebase token verification failed:', {
+      error: error.message,
+      code: error.code,
+      ip: req.ip,
+      userAgent: req.get('User-Agent')
+    });
+    
+    // Try to recover from session if Firebase auth fails
+    try {
+      const authHeader = req.headers.authorization;
+      if (authHeader && authHeader.startsWith('Bearer ')) {
+        const idToken = authHeader.split('Bearer ')[1];
+        
+        if (idToken) {
+          // Try to verify without force refresh
+          const decodedToken = await admin.auth().verifyIdToken(idToken, false);
+          req.user = decodedToken;
+          logger.info('Recovered authentication from session for user:', decodedToken.email);
+          next();
+          return;
+        }
+      }
+    } catch (recoveryError) {
+      logger.debug('Session recovery failed:', recoveryError);
+    }
+    
+    // Provide more specific error messages
+    if (error.code === 'auth/id-token-expired') {
+      res.status(401).json({ error: 'Token expired', code: 'TOKEN_EXPIRED' });
+    } else if (error.code === 'auth/id-token-revoked') {
+      res.status(401).json({ error: 'Token revoked', code: 'TOKEN_REVOKED' });
+    } else if (error.code === 'auth/invalid-id-token') {
+      res.status(401).json({ error: 'Invalid token', code: 'INVALID_TOKEN' });
+    } else {
+      res.status(401).json({ error: 'Invalid token' });
+    }
+  }
+};
+
+export const optionalFirebaseAuth = async (
+  req: FirebaseAuthenticatedRequest,
+  _res: Response,
+  next: NextFunction
+): Promise<void> => {
+  try {
+    const authHeader = req.headers.authorization;
+    
+    if (authHeader && authHeader.startsWith('Bearer ')) {
+      const idToken = authHeader.split('Bearer ')[1];
+      if (idToken) {
+        const decodedToken = await admin.auth().verifyIdToken(idToken, true);
+        req.user = decodedToken;
+      }
+    }
+  } catch (error) {
+    // Silently ignore auth errors for optional auth
+    logger.debug('Optional auth failed:', error);
+  }
+  
+  next();
+};
\ No newline at end of file
diff --git a/backend/src/middleware/upload.ts b/backend/src/middleware/upload.ts
index d75031b..5ea891b 100644
--- a/backend/src/middleware/upload.ts
+++ b/backend/src/middleware/upload.ts
@@ -141,8 +141,30 @@ export const handleUploadError = (error: any, req: Request, res: Response, next:
   next();
 };
 
-// Main upload middleware
-export const uploadMiddleware = upload.single('document');
+// Main upload middleware with timeout handling
+export const uploadMiddleware = (req: Request, res: Response, next: NextFunction) => {
+  // Set a timeout for the upload
+  const uploadTimeout = setTimeout(() => {
+    logger.error('Upload timeout for request:', {
+      ip: req.ip,
+      userAgent: req.get('User-Agent'),
+    });
+    res.status(408).json({
+      success: false,
+      error: 'Upload timeout',
+      message: 'Upload took too long to complete',
+    });
+  }, 300000); // 5 minutes timeout
+
+  // Clear timeout on successful upload
+  const originalNext = next;
+  next = (err?: any) => {
+    clearTimeout(uploadTimeout);
+    originalNext(err);
+  };
+
+  upload.single('document')(req, res, next);
+};
 
 // Combined middleware for file uploads
 export const handleFileUpload = [
diff --git a/backend/src/routes/auth.ts b/backend/src/routes/auth.ts
deleted file mode 100644
index ef443c1..0000000
--- a/backend/src/routes/auth.ts
+++ /dev/null
@@ -1,59 +0,0 @@
-import { Router } from 'express';
-import { 
-  register, 
-  login, 
-  logout, 
-  refreshToken, 
-  getProfile, 
-  updateProfile 
-} from '../controllers/authController';
-import { 
-  authenticateToken, 
-  authRateLimit 
-} from '../middleware/auth';
-
-const router = Router();
-
-/**
- * @route   POST /api/auth/register
- * @desc    Register a new user
- * @access  Public
- */
-router.post('/register', authRateLimit, register);
-
-/**
- * @route   POST /api/auth/login
- * @desc    Login user
- * @access  Public
- */
-router.post('/login', authRateLimit, login);
-
-/**
- * @route   POST /api/auth/logout
- * @desc    Logout user
- * @access  Private
- */
-router.post('/logout', authenticateToken, logout);
-
-/**
- * @route   POST /api/auth/refresh
- * @desc    Refresh access token
- * @access  Public
- */
-router.post('/refresh', authRateLimit, refreshToken);
-
-/**
- * @route   GET /api/auth/profile
- * @desc    Get current user profile
- * @access  Private
- */
-router.get('/profile', authenticateToken, getProfile);
-
-/**
- * @route   PUT /api/auth/profile
- * @desc    Update current user profile
- * @access  Private
- */
-router.put('/profile', authenticateToken, updateProfile);
-
-export default router; 
\ No newline at end of file
diff --git a/backend/src/routes/documents.ts b/backend/src/routes/documents.ts
index a98bd5b..a018938 100644
--- a/backend/src/routes/documents.ts
+++ b/backend/src/routes/documents.ts
@@ -1,5 +1,5 @@
 import express from 'express';
-import { authenticateToken } from '../middleware/auth';
+import { verifyFirebaseToken } from '../middleware/firebaseAuth';
 import { documentController } from '../controllers/documentController';
 import { unifiedDocumentProcessor } from '../services/unifiedDocumentProcessor';
 import { logger } from '../utils/logger';
@@ -11,11 +11,7 @@ import { DocumentModel } from '../models/DocumentModel';
 declare global {
   namespace Express {
     interface Request {
-      user?: {
-        id: string;
-        email: string;
-        role: string;
-      };
+      user?: import('firebase-admin').auth.DecodedIdToken;
     }
   }
 }
@@ -23,7 +19,7 @@ declare global {
 const router = express.Router();
 
 // Apply authentication to all routes
-router.use(authenticateToken);
+router.use(verifyFirebaseToken);
 
 // Essential document management routes (keeping these)
 router.post('/upload', handleFileUpload, documentController.uploadDocument);
@@ -36,7 +32,7 @@ router.delete('/:id', documentController.deleteDocument);
 // Analytics endpoints (keeping these for monitoring)
 router.get('/analytics', async (req, res) => {
   try {
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
     }
@@ -67,7 +63,7 @@ router.get('/processing-stats', async (_req, res) => {
 // Download endpoint (keeping this)
 router.get('/:id/download', async (req, res) => {
   try {
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
     }
@@ -106,7 +102,7 @@ router.get('/:id/download', async (req, res) => {
 router.post('/:id/process-optimized-agentic-rag', async (req, res) => {
   try {
     const { id } = req.params;
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
@@ -147,7 +143,7 @@ router.post('/:id/process-optimized-agentic-rag', async (req, res) => {
 router.get('/:id/agentic-rag-sessions', async (req, res) => {
   try {
     const { id } = req.params;
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
@@ -183,7 +179,7 @@ router.get('/:id/agentic-rag-sessions', async (req, res) => {
 router.get('/agentic-rag-sessions/:sessionId', async (req, res) => {
   try {
     const { sessionId } = req.params;
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
@@ -245,7 +241,7 @@ router.get('/agentic-rag-sessions/:sessionId', async (req, res) => {
 router.get('/:id/analytics', async (req, res) => {
   try {
     const { id } = req.params;
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     
     if (!userId) {
       return res.status(401).json({ error: 'User not authenticated' });
diff --git a/backend/src/routes/vector.ts b/backend/src/routes/vector.ts
index 887af80..126a162 100644
--- a/backend/src/routes/vector.ts
+++ b/backend/src/routes/vector.ts
@@ -90,7 +90,7 @@ router.get('/document-chunks/:documentId', async (req, res) => {
  */
 router.get('/analytics', async (req, res) => {
   try {
-    const userId = req.user?.id;
+    const userId = req.user?.uid;
     const { days = 30 } = req.query;
 
     if (!userId) {
diff --git a/backend/src/services/vectorDatabaseService.ts b/backend/src/services/vectorDatabaseService.ts
index 7f74ec2..becdf63 100644
--- a/backend/src/services/vectorDatabaseService.ts
+++ b/backend/src/services/vectorDatabaseService.ts
@@ -1,23 +1,24 @@
 import { config } from '../config/env';
 import { logger } from '../utils/logger';
 import { VectorDatabaseModel, DocumentChunk, VectorSearchResult } from '../models/VectorDatabaseModel';
-import pool from '../config/database';
 
 // Re-export types from the model
 export { VectorSearchResult, DocumentChunk } from '../models/VectorDatabaseModel';
 
 class VectorDatabaseService {
-  private provider: 'pinecone' | 'pgvector' | 'chroma';
+  private provider: 'pinecone' | 'pgvector' | 'chroma' | 'supabase';
   private client: any;
   private semanticCache: Map<string, { embedding: number[]; timestamp: number }> = new Map();
   private readonly CACHE_TTL = 3600000; // 1 hour cache TTL
 
   constructor() {
     this.provider = config.vector.provider;
-    this.initializeClient();
+    // Don't initialize client immediately - do it lazily when needed
   }
 
   private async initializeClient() {
+    if (this.client) return; // Already initialized
+    
     switch (this.provider) {
       case 'pinecone':
         await this.initializePinecone();
@@ -28,11 +29,22 @@ class VectorDatabaseService {
       case 'chroma':
         await this.initializeChroma();
         break;
+      case 'supabase':
+        await this.initializeSupabase();
+        break;
       default:
-        throw new Error(`Unsupported vector database provider: ${this.provider}`);
+        logger.error(`Unsupported vector database provider: ${this.provider}`);
+        this.client = null;
     }
   }
 
+  private async ensureInitialized() {
+    if (!this.client) {
+      await this.initializeClient();
+    }
+    return this.client !== null;
+  }
+
   private async initializePinecone() {
     // const { Pinecone } = await import('@pinecone-database/pinecone');
     // this.client = new Pinecone({
@@ -42,42 +54,12 @@ class VectorDatabaseService {
   }
 
   private async initializePgVector() {
-    // Use imported database pool
-    this.client = pool;
-    
-    // Ensure pgvector extension is enabled
-    try {
-      await pool.query('CREATE EXTENSION IF NOT EXISTS vector');
-      
-      // Create vector tables if they don't exist
-      await this.createVectorTables();
-      
-      logger.info('pgvector extension initialized successfully');
-    } catch (error) {
-      logger.error('Failed to initialize pgvector', error);
-      throw new Error('pgvector initialization failed');
-    }
+    // Note: pgvector is deprecated in favor of Supabase
+    // This method is kept for backward compatibility but will not work in Firebase
+    logger.warn('pgvector provider is deprecated. Use Supabase instead for cloud deployment.');
+    this.client = null;
   }
 
-  private async createVectorTables() {
-    const createTableQuery = `
-      CREATE TABLE IF NOT EXISTS document_chunks (
-        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
-        document_id VARCHAR(255) NOT NULL,
-        chunk_index INTEGER NOT NULL,
-        content TEXT NOT NULL,
-        embedding vector(3072),
-        metadata JSONB DEFAULT '{}',
-        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-        updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
-      );
-      
-      CREATE INDEX IF NOT EXISTS document_chunks_document_id_idx ON document_chunks(document_id);
-      CREATE INDEX IF NOT EXISTS document_chunks_embedding_idx ON document_chunks USING ivfflat (embedding vector_cosine_ops);
-    `;
-    
-    await this.client.query(createTableQuery);
-  }
 
   private async initializeChroma() {
     // const { ChromaClient } = await import('chromadb');
@@ -87,6 +69,40 @@ class VectorDatabaseService {
     logger.info('Chroma vector database initialized');
   }
 
+  private async initializeSupabase() {
+    try {
+      const { getSupabaseServiceClient } = await import('../config/supabase');
+      this.client = getSupabaseServiceClient();
+      
+      // Create the document_chunks table if it doesn't exist
+      await this.createSupabaseVectorTables();
+      
+      logger.info('Supabase vector database initialized successfully');
+    } catch (error) {
+      logger.error('Failed to initialize Supabase vector database', error);
+      // Don't throw error, just log it and continue without vector DB
+      this.client = null;
+    }
+  }
+
+  private async createSupabaseVectorTables() {
+    try {
+      // Enable pgvector extension
+      await this.client.rpc('enable_pgvector');
+      
+      // Create document_chunks table with vector support
+      const { error } = await this.client.rpc('create_document_chunks_table');
+      
+      if (error && !error.message.includes('already exists')) {
+        throw error;
+      }
+      
+      logger.info('Supabase vector tables created successfully');
+    } catch (error) {
+      logger.warn('Could not create vector tables automatically. Please run the setup SQL manually:', error);
+    }
+  }
+
   /**
    * Generate embeddings for text using OpenAI or Anthropic with caching
    */
@@ -225,6 +241,12 @@ class VectorDatabaseService {
    * Store document chunks with embeddings
    */
   async storeDocumentChunks(chunks: DocumentChunk[]): Promise<void> {
+    const initialized = await this.ensureInitialized();
+    if (!initialized) {
+      logger.warn('Vector database not available, skipping chunk storage');
+      return;
+    }
+    
     try {
       switch (this.provider) {
         case 'pinecone':
@@ -236,6 +258,9 @@ class VectorDatabaseService {
         case 'chroma':
           await this.storeInChroma(chunks);
           break;
+        case 'supabase':
+          await this.storeInSupabase(chunks);
+          break;
       }
       logger.info(`Stored ${chunks.length} document chunks in vector database`);
     } catch (error) {
@@ -257,6 +282,12 @@ class VectorDatabaseService {
       enableQueryExpansion?: boolean;
     } = {}
   ): Promise<VectorSearchResult[]> {
+    const initialized = await this.ensureInitialized();
+    if (!initialized) {
+      logger.warn('Vector database not available, returning empty search results');
+      return [];
+    }
+    
     try {
       let queries = [query];
       
@@ -281,6 +312,9 @@ class VectorDatabaseService {
           case 'chroma':
             results = await this.searchChroma(embedding, options);
             break;
+          case 'supabase':
+            results = await this.searchSupabase(embedding, options);
+            break;
           default:
             throw new Error(`Unsupported provider: ${this.provider}`);
         }
@@ -401,55 +435,14 @@ class VectorDatabaseService {
   }
 
   // Private implementation methods for different providers
-  private async storeInPinecone(chunks: DocumentChunk[]): Promise<void> {
-    const index = this.client.index(config.vector.pineconeIndex!);
-    
-    const vectors = chunks.map(chunk => ({
-      id: chunk.id,
-      values: chunk.embedding,
-      metadata: {
-        ...chunk.metadata,
-        documentId: chunk.documentId,
-        content: chunk.content
-      }
-    }));
-
-    await index.upsert(vectors);
+  private async storeInPinecone(_chunks: DocumentChunk[]): Promise<void> {
+    logger.warn('Pinecone provider not fully implemented');
+    throw new Error('Pinecone provider not available');
   }
 
-  private async storeInPgVector(chunks: DocumentChunk[]): Promise<void> {
-    try {
-      // Delete existing chunks for this document
-      if (chunks.length > 0 && chunks[0]) {
-        await this.client.query(
-          'DELETE FROM document_chunks WHERE document_id = $1',
-          [chunks[0].documentId]
-        );
-      }
-      
-      // Insert new chunks with embeddings using proper pgvector format
-      for (const chunk of chunks) {
-        // Ensure embedding is properly formatted for pgvector
-        const embeddingArray = Array.isArray(chunk.embedding) ? chunk.embedding : [];
-        
-        await this.client.query(
-          `INSERT INTO document_chunks (document_id, chunk_index, content, embedding, metadata) 
-           VALUES ($1, $2, $3, $4::vector, $5)`,
-          [
-            chunk.documentId,
-            chunk.metadata?.['chunkIndex'] || 0,
-            chunk.content,
-            embeddingArray, // Pass as array, pgvector will handle the conversion
-            JSON.stringify(chunk.metadata || {})
-          ]
-        );
-      }
-      
-      logger.info(`Stored ${chunks.length} chunks in pgvector for document ${chunks[0]?.documentId}`);
-    } catch (error) {
-      logger.error('Failed to store chunks in pgvector', error);
-      throw error;
-    }
+  private async storeInPgVector(_chunks: DocumentChunk[]): Promise<void> {
+    logger.warn('pgvector provider is deprecated. Use Supabase instead for cloud deployment.');
+    throw new Error('pgvector provider not available in Firebase environment. Use Supabase instead.');
   }
 
   private async storeInChroma(chunks: DocumentChunk[]): Promise<void> {
@@ -472,73 +465,19 @@ class VectorDatabaseService {
   }
 
   private async searchPinecone(
-    embedding: number[],
-    options: any
+    _embedding: number[],
+    _options: any
   ): Promise<VectorSearchResult[]> {
-    const index = this.client.index(config.vector.pineconeIndex!);
-    
-    const queryResponse = await index.query({
-      vector: embedding,
-      topK: options.limit || 10,
-      filter: options.filters,
-      includeMetadata: true
-    });
-
-    return queryResponse.matches?.map((match: any) => ({
-      id: match.id,
-      score: match.score,
-      metadata: match.metadata,
-      content: match.metadata.content
-    })) || [];
+    logger.warn('Pinecone provider not fully implemented');
+    throw new Error('Pinecone provider not available');
   }
 
   private async searchPgVector(
-    embedding: number[],
-    options: any
+    _embedding: number[],
+    _options: any
   ): Promise<VectorSearchResult[]> {
-    try {
-      const { documentId, limit = 5, similarity = 0.7 } = options;
-      
-      // Ensure embedding is properly formatted
-      const embeddingArray = Array.isArray(embedding) ? embedding : [];
-      
-      // Build query with optional document filter
-      let query = `
-        SELECT 
-          id,
-          document_id,
-          content,
-          metadata,
-          1 - (embedding <=> $1::vector) as similarity
-        FROM document_chunks
-        WHERE 1 - (embedding <=> $1::vector) > $2
-      `;
-      
-      const params: any[] = [embeddingArray, similarity];
-      
-      if (documentId) {
-        query += ' AND document_id = $3';
-        params.push(documentId);
-      }
-      
-      query += ' ORDER BY embedding <=> $1::vector LIMIT $' + (params.length + 1);
-      params.push(limit);
-      
-      const result = await this.client.query(query, params);
-      
-      return result.rows.map((row: any) => ({
-        id: row.id,
-        documentId: row.document_id,
-        content: row.content,
-        metadata: row.metadata || {},
-        similarity: row.similarity,
-        chunkContent: row.content, // Alias for compatibility
-        similarityScore: row.similarity // Add this for consistency
-      }));
-    } catch (error) {
-      logger.error('pgvector search failed', error);
-      throw error;
-    }
+    logger.warn('pgvector provider is deprecated. Use Supabase instead for cloud deployment.');
+    throw new Error('pgvector provider not available in Firebase environment. Use Supabase instead.');
   }
 
   private async searchChroma(
@@ -563,6 +502,80 @@ class VectorDatabaseService {
     }));
   }
 
+  private async storeInSupabase(chunks: DocumentChunk[]): Promise<void> {
+    try {
+      // Transform chunks to include embeddings
+      const supabaseRows = await Promise.all(
+        chunks.map(async (chunk) => ({
+          id: chunk.id,
+          document_id: chunk.documentId,
+          chunk_index: chunk.chunkIndex,
+          content: chunk.content,
+          embedding: chunk.embedding,
+          metadata: chunk.metadata || {}
+        }))
+      );
+
+      const { error } = await this.client
+        .from('document_chunks')
+        .upsert(supabaseRows);
+
+      if (error) {
+        throw error;
+      }
+
+      logger.info(`Successfully stored ${chunks.length} chunks in Supabase`);
+    } catch (error) {
+      logger.error('Failed to store chunks in Supabase:', error);
+      throw error;
+    }
+  }
+
+  private async searchSupabase(
+    embedding: number[],
+    options: {
+      documentId?: string;
+      limit?: number;
+      similarity?: number;
+      filters?: Record<string, any>;
+    }
+  ): Promise<VectorSearchResult[]> {
+    try {
+      let query = this.client
+        .from('document_chunks')
+        .select('id, content, metadata, document_id')
+        .rpc('match_documents', {
+          query_embedding: embedding,
+          match_threshold: options.similarity || 0.7,
+          match_count: options.limit || 10
+        });
+
+      // Add document filter if specified
+      if (options.documentId) {
+        query = query.eq('document_id', options.documentId);
+      }
+
+      const { data, error } = await query;
+
+      if (error) {
+        throw error;
+      }
+
+      return data.map((row: any) => ({
+        id: row.id,
+        score: row.similarity,
+        metadata: {
+          ...row.metadata,
+          documentId: row.document_id
+        },
+        content: row.content
+      }));
+    } catch (error) {
+      logger.error('Failed to search in Supabase:', error);
+      return [];
+    }
+  }
+
   private async getDocumentChunks(documentId: string): Promise<DocumentChunk[]> {
     return await VectorDatabaseModel.getDocumentChunks(documentId);
   }
diff --git a/backend/supabase_setup.sql b/backend/supabase_setup.sql
new file mode 100644
index 0000000..e473c8c
--- /dev/null
+++ b/backend/supabase_setup.sql
@@ -0,0 +1,89 @@
+-- Enable the pgvector extension
+CREATE EXTENSION IF NOT EXISTS vector;
+
+-- Create document_chunks table with vector support
+CREATE TABLE IF NOT EXISTS document_chunks (
+  id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+  document_id VARCHAR(255) NOT NULL,
+  chunk_index INTEGER NOT NULL,
+  content TEXT NOT NULL,
+  embedding vector(1536), -- OpenAI embeddings are 1536 dimensions
+  metadata JSONB DEFAULT '{}',
+  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+-- Create indexes for better performance
+CREATE INDEX IF NOT EXISTS document_chunks_document_id_idx ON document_chunks(document_id);
+CREATE INDEX IF NOT EXISTS document_chunks_embedding_idx ON document_chunks USING ivfflat (embedding vector_cosine_ops);
+
+-- Create function to enable pgvector (for RPC calls)
+CREATE OR REPLACE FUNCTION enable_pgvector()
+RETURNS VOID AS $$
+BEGIN
+  CREATE EXTENSION IF NOT EXISTS vector;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create function to create document_chunks table (for RPC calls)
+CREATE OR REPLACE FUNCTION create_document_chunks_table()
+RETURNS VOID AS $$
+BEGIN
+  CREATE TABLE IF NOT EXISTS document_chunks (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    document_id VARCHAR(255) NOT NULL,
+    chunk_index INTEGER NOT NULL,
+    content TEXT NOT NULL,
+    embedding vector(1536),
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+  );
+  
+  CREATE INDEX IF NOT EXISTS document_chunks_document_id_idx ON document_chunks(document_id);
+  CREATE INDEX IF NOT EXISTS document_chunks_embedding_idx ON document_chunks USING ivfflat (embedding vector_cosine_ops);
+END;
+$$ LANGUAGE plpgsql;
+
+-- Create function to match documents based on vector similarity
+CREATE OR REPLACE FUNCTION match_documents(
+  query_embedding vector(1536),
+  match_threshold float DEFAULT 0.7,
+  match_count int DEFAULT 10
+)
+RETURNS TABLE(
+  id UUID,
+  content TEXT,
+  metadata JSONB,
+  document_id VARCHAR(255),
+  similarity FLOAT
+) AS $$
+BEGIN
+  RETURN QUERY
+  SELECT
+    document_chunks.id,
+    document_chunks.content,
+    document_chunks.metadata,
+    document_chunks.document_id,
+    1 - (document_chunks.embedding <=> query_embedding) AS similarity
+  FROM document_chunks
+  WHERE 1 - (document_chunks.embedding <=> query_embedding) > match_threshold
+  ORDER BY document_chunks.embedding <=> query_embedding
+  LIMIT match_count;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Enable Row Level Security (RLS) if needed
+-- ALTER TABLE document_chunks ENABLE ROW LEVEL SECURITY;
+
+-- Create policies for RLS (adjust as needed for your auth requirements)
+-- CREATE POLICY "Users can view all document chunks" ON document_chunks FOR SELECT USING (true);
+-- CREATE POLICY "Users can insert document chunks" ON document_chunks FOR INSERT WITH CHECK (true);
+-- CREATE POLICY "Users can update document chunks" ON document_chunks FOR UPDATE USING (true);
+-- CREATE POLICY "Users can delete document chunks" ON document_chunks FOR DELETE USING (true);
+
+-- Grant necessary permissions
+GRANT ALL ON document_chunks TO authenticated;
+GRANT ALL ON document_chunks TO anon;
+GRANT EXECUTE ON FUNCTION match_documents TO authenticated;
+GRANT EXECUTE ON FUNCTION match_documents TO anon;
\ No newline at end of file
diff --git a/frontend/.env.production b/frontend/.env.production
index ed52c6d..37947bf 100644
--- a/frontend/.env.production
+++ b/frontend/.env.production
@@ -1,4 +1,4 @@
-VITE_API_BASE_URL=https://api-y56ccs6wva-uc.a.run.app/api
+VITE_API_BASE_URL=https://api-y56ccs6wva-uc.a.run.app
 VITE_FIREBASE_API_KEY=AIzaSyBoV04YHkbCSUIU6sXki57um4xNsvLV_jY
 VITE_FIREBASE_AUTH_DOMAIN=cim-summarizer.firebaseapp.com
 VITE_FIREBASE_PROJECT_ID=cim-summarizer
diff --git a/frontend/.gcloudignore b/frontend/.gcloudignore
new file mode 100644
index 0000000..5a616cb
--- /dev/null
+++ b/frontend/.gcloudignore
@@ -0,0 +1,17 @@
+# This file specifies files that are *not* uploaded to Google Cloud
+# using gcloud. It follows the same syntax as .gitignore, with the addition of
+# "#!include" directives (which insert the entries of the given .gitignore-style
+# file at that point).
+#
+# For more information, run:
+#   $ gcloud topic gcloudignore
+#
+.gcloudignore
+# If you would like to upload your .git directory, .gitignore file or files
+# from your .gitignore file, remove the corresponding line
+# below:
+.git
+.gitignore
+
+node_modules
+#!include:.gitignore
diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 43f840b..3a0716b 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -9,6 +9,7 @@ import DocumentViewer from './components/DocumentViewer';
 import Analytics from './components/Analytics';
 import LogoutButton from './components/LogoutButton';
 import { documentService } from './services/documentService';
+
 import { 
   Home, 
   Upload, 
@@ -22,9 +23,9 @@ import { cn } from './utils/cn';
 
 // Dashboard component
 const Dashboard: React.FC = () => {
-  const { user } = useAuth();
+  const { user, token } = useAuth();
   const [documents, setDocuments] = useState<any[]>([]);
-  const [loading, setLoading] = useState(true);
+  const [loading, setLoading] = useState(false);
   const [viewingDocument, setViewingDocument] = useState<string | null>(null);
   const [searchTerm, setSearchTerm] = useState('');
   const [activeTab, setActiveTab] = useState<'overview' | 'documents' | 'upload' | 'analytics'>('overview');
@@ -51,13 +52,24 @@ const Dashboard: React.FC = () => {
   const fetchDocuments = useCallback(async () => {
     try {
       setLoading(true);
-      const response = await fetch('/api/documents', {
+      console.log('Fetching documents with token:', token ? 'Token available' : 'No token');
+      console.log('User state:', user);
+      console.log('Token preview:', token ? `${token.substring(0, 20)}...` : 'No token');
+      
+      if (!token) {
+        console.error('No authentication token available');
+        return;
+      }
+      
+      const response = await fetch('https://us-central1-cim-summarizer.cloudfunctions.net/api/api/documents', {
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('auth_token')}`,
+          'Authorization': `Bearer ${token}`,
           'Content-Type': 'application/json',
         },
       });
       
+      console.log('API response status:', response.status);
+      
       if (response.ok) {
         const result = await response.json();
         // The API returns an array directly, not wrapped in success/data
@@ -78,13 +90,17 @@ const Dashboard: React.FC = () => {
           }));
           setDocuments(transformedDocs);
         }
+      } else {
+        console.error('API request failed:', response.status, response.statusText);
+        const errorText = await response.text();
+        console.error('Error response body:', errorText);
       }
     } catch (error) {
       console.error('Failed to fetch documents:', error);
     } finally {
       setLoading(false);
     }
-  }, [user?.name, user?.email]);
+  }, [user?.name, user?.email, token]);
 
   // Poll for status updates on documents that are being processed
   const pollDocumentStatus = useCallback(async (documentId: string) => {
@@ -95,9 +111,14 @@ const Dashboard: React.FC = () => {
     }
     
     try {
-      const response = await fetch(`/api/documents/${documentId}/progress`, {
+      if (!token) {
+        console.error('No authentication token available');
+        return false;
+      }
+      
+      const response = await fetch(`https://us-central1-cim-summarizer.cloudfunctions.net/api/api/documents/${documentId}/progress`, {
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('auth_token')}`,
+          'Authorization': `Bearer ${token}`,
           'Content-Type': 'application/json',
         },
       });
@@ -143,7 +164,7 @@ const Dashboard: React.FC = () => {
     }
     
     return true; // Continue polling
-  }, []);
+  }, [token]);
 
   // Set up polling for documents that are being processed or uploaded (might be processing)
   useEffect(() => {
diff --git a/frontend/src/components/DocumentUpload.tsx b/frontend/src/components/DocumentUpload.tsx
index b68e4d3..6b844de 100644
--- a/frontend/src/components/DocumentUpload.tsx
+++ b/frontend/src/components/DocumentUpload.tsx
@@ -1,8 +1,9 @@
-import React, { useCallback, useState, useRef, useEffect } from 'react';
+import React, { useState, useCallback, useRef, useEffect } from 'react';
 import { useDropzone } from 'react-dropzone';
 import { Upload, FileText, X, CheckCircle, AlertCircle } from 'lucide-react';
 import { cn } from '../utils/cn';
 import { documentService } from '../services/documentService';
+import { useAuth } from '../contexts/AuthContext';
 
 interface UploadedFile {
   id: string;
@@ -24,6 +25,7 @@ const DocumentUpload: React.FC<DocumentUploadProps> = ({
   onUploadComplete,
   onUploadError,
 }) => {
+  const { token } = useAuth();
   const [uploadedFiles, setUploadedFiles] = useState<UploadedFile[]>([]);
   const [isUploading, setIsUploading] = useState(false);
   const abortControllers = useRef<Map<string, AbortController>>(new Map());
@@ -160,11 +162,18 @@ const DocumentUpload: React.FC<DocumentUploadProps> = ({
       return;
     }
     
+    // Validate UUID format
+    const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+    if (!uuidRegex.test(documentId)) {
+      console.warn('Attempted to monitor progress for document with invalid UUID format:', documentId);
+      return;
+    }
+    
     const checkProgress = async () => {
       try {
-        const response = await fetch(`/api/documents/${documentId}/progress`, {
+        const response = await fetch(`https://us-central1-cim-summarizer.cloudfunctions.net/api/api/documents/${documentId}/progress`, {
           headers: {
-            'Authorization': `Bearer ${localStorage.getItem('auth_token')}`,
+            'Authorization': `Bearer ${token}`,
             'Content-Type': 'application/json',
           },
         });
@@ -198,9 +207,18 @@ const DocumentUpload: React.FC<DocumentUploadProps> = ({
           if (newStatus === 'completed' || newStatus === 'error') {
             return;
           }
+        } else if (response.status === 404) {
+          // Document not found, stop monitoring
+          console.warn(`Document ${documentId} not found, stopping progress monitoring`);
+          return;
+        } else if (response.status === 401) {
+          // Unauthorized, stop monitoring
+          console.warn('Unauthorized access to document progress, stopping monitoring');
+          return;
         }
       } catch (error) {
         console.error('Failed to fetch processing progress:', error);
+        // Don't stop monitoring on network errors, just log and continue
       }
 
       // Continue monitoring
@@ -209,7 +227,7 @@ const DocumentUpload: React.FC<DocumentUploadProps> = ({
 
     // Start monitoring
     setTimeout(checkProgress, 1000);
-  }, []);
+  }, [token]);
 
   const { getRootProps, getInputProps, isDragActive } = useDropzone({
     onDrop,
diff --git a/frontend/src/components/ProcessingProgress.tsx b/frontend/src/components/ProcessingProgress.tsx
index 1bbb2df..25fd0d6 100644
--- a/frontend/src/components/ProcessingProgress.tsx
+++ b/frontend/src/components/ProcessingProgress.tsx
@@ -1,5 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { CheckCircle, AlertCircle, Clock, FileText, TrendingUp, Save } from 'lucide-react';
+import { useAuth } from '../contexts/AuthContext';
 
 interface ProcessingProgressProps {
   documentId: string;
@@ -26,6 +27,7 @@ const ProcessingProgress: React.FC<ProcessingProgressProps> = ({
   onComplete,
   onError,
 }) => {
+  const { token } = useAuth();
   const [progress, setProgress] = useState<ProgressData | null>(null);
   const [isPolling, setIsPolling] = useState(true);
 
@@ -62,33 +64,45 @@ const ProcessingProgress: React.FC<ProcessingProgressProps> = ({
     
     const pollProgress = async () => {
       try {
-        const response = await fetch(`/api/documents/${documentId}/progress`, {
+        const response = await fetch(`https://us-central1-cim-summarizer.cloudfunctions.net/api/api/documents/${documentId}/progress`, {
           headers: {
-            'Authorization': `Bearer ${localStorage.getItem('auth_token')}`,
+            'Authorization': `Bearer ${token}`,
             'Content-Type': 'application/json',
           },
         });
 
         if (response.ok) {
-          const result = await response.json();
-          if (result.success) {
-            setProgress(result.data);
-            
-            // Handle completion
-            if (result.data.status === 'completed') {
-              setIsPolling(false);
+          const data = await response.json();
+          setProgress({
+            documentId,
+            jobId: data.jobId || '',
+            status: data.status,
+            step: data.step || 'validation',
+            progress: data.progress || 0,
+            message: data.message || '',
+            startTime: data.startTime || new Date().toISOString(),
+            estimatedTimeRemaining: data.estimatedTimeRemaining,
+            currentChunk: data.currentChunk,
+            totalChunks: data.totalChunks,
+            error: data.error,
+          });
+
+          if (data.status === 'completed' || data.status === 'failed') {
+            setIsPolling(false);
+            if (data.status === 'completed') {
               onComplete?.();
-            }
-            
-            // Handle error
-            if (result.data.status === 'error') {
-              setIsPolling(false);
-              onError?.(result.data.error || 'Processing failed');
+            } else {
+              onError?.(data.error || 'Processing failed');
             }
           }
         }
       } catch (error) {
-        console.error('Failed to fetch progress:', error);
+        console.error('Failed to check progress:', error);
+        setProgress(prev => prev ? {
+          ...prev,
+          message: 'Failed to check progress',
+          error: 'Network error'
+        } : null);
       }
     };
 
@@ -103,7 +117,7 @@ const ProcessingProgress: React.FC<ProcessingProgressProps> = ({
     pollProgress();
 
     return () => clearInterval(interval);
-  }, [documentId, isPolling, onComplete, onError]);
+  }, [documentId, isPolling, onComplete, onError, token]);
 
   if (!progress) {
     return (
diff --git a/frontend/src/components/QueueStatus.tsx b/frontend/src/components/QueueStatus.tsx
index 0d526ee..d62b389 100644
--- a/frontend/src/components/QueueStatus.tsx
+++ b/frontend/src/components/QueueStatus.tsx
@@ -1,5 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { Clock, CheckCircle, AlertCircle, PlayCircle } from 'lucide-react';
+import { useAuth } from '../contexts/AuthContext';
 
 interface QueueStatusProps {
   refreshTrigger?: number;
@@ -27,25 +28,29 @@ interface ProcessingJob {
 }
 
 const QueueStatus: React.FC<QueueStatusProps> = ({ refreshTrigger }) => {
+  const { token } = useAuth();
   const [stats, setStats] = useState<QueueStats | null>(null);
   const [activeJobs, setActiveJobs] = useState<ProcessingJob[]>([]);
   const [loading, setLoading] = useState(true);
 
   const fetchQueueStatus = async () => {
     try {
-      const response = await fetch('/api/documents/queue/status', {
+      if (!token) {
+        console.error('No authentication token available');
+        return;
+      }
+      
+      const response = await fetch('https://us-central1-cim-summarizer.cloudfunctions.net/api/api/documents/queue/status', {
         headers: {
-          'Authorization': `Bearer ${localStorage.getItem('auth_token')}`,
+          'Authorization': `Bearer ${token}`,
           'Content-Type': 'application/json',
         },
       });
 
       if (response.ok) {
-        const result = await response.json();
-        if (result.success) {
-          setStats(result.data.stats);
-          setActiveJobs(result.data.activeJobs || []);
-        }
+        const data = await response.json();
+        setStats(data.stats);
+        setActiveJobs(data.activeJobs || []);
       }
     } catch (error) {
       console.error('Failed to fetch queue status:', error);
diff --git a/frontend/src/services/authService.ts b/frontend/src/services/authService.ts
index ad33938..9304498 100644
--- a/frontend/src/services/authService.ts
+++ b/frontend/src/services/authService.ts
@@ -13,6 +13,8 @@ import { LoginCredentials, AuthResult, User } from '../types/auth';
 class AuthService {
   private currentUser: FirebaseUser | null = null;
   private authStateListeners: Array<(user: FirebaseUser | null) => void> = [];
+  private tokenRefreshInterval: NodeJS.Timeout | null = null;
+  private isRefreshing = false;
 
   constructor() {
     // Listen for auth state changes
@@ -21,13 +23,36 @@ class AuthService {
       this.updateAxiosHeaders(user);
       // Notify all listeners
       this.authStateListeners.forEach(listener => listener(user));
+      
+      // Clear existing interval and set up new one
+      if (this.tokenRefreshInterval) {
+        clearInterval(this.tokenRefreshInterval);
+      }
+      
+      if (user) {
+        // Set up periodic token refresh (every 45 minutes to be safe)
+        this.tokenRefreshInterval = setInterval(async () => {
+          if (this.currentUser && !this.isRefreshing) {
+            try {
+              this.isRefreshing = true;
+              await this.updateAxiosHeaders(this.currentUser);
+            } catch (error) {
+              console.error('Periodic token refresh failed:', error);
+              // Don't logout on refresh failure, let the next request handle it
+            } finally {
+              this.isRefreshing = false;
+            }
+          }
+        }, 45 * 60 * 1000); // 45 minutes
+      }
     });
   }
 
   private async updateAxiosHeaders(user: FirebaseUser | null) {
     if (user) {
       try {
-        const token = await getIdToken(user);
+        // Force token refresh to ensure we have a fresh token
+        const token = await getIdToken(user, true);
         axios.defaults.headers.common['Authorization'] = `Bearer ${token}`;
       } catch (error) {
         console.error('Failed to get ID token:', error);
@@ -40,12 +65,10 @@ class AuthService {
 
   onAuthStateChanged(callback: (user: FirebaseUser | null) => void) {
     this.authStateListeners.push(callback);
-    // Immediately call with current state
-    callback(this.currentUser);
-    
-    // Return unsubscribe function
     return () => {
-      this.authStateListeners = this.authStateListeners.filter(listener => listener !== callback);
+      this.authStateListeners = this.authStateListeners.filter(
+        listener => listener !== callback
+      );
     };
   }
 
@@ -103,6 +126,10 @@ class AuthService {
 
   async logout(): Promise<void> {
     try {
+      if (this.tokenRefreshInterval) {
+        clearInterval(this.tokenRefreshInterval);
+        this.tokenRefreshInterval = null;
+      }
       await signOut(auth);
     } catch (error) {
       console.error('Logout failed:', error);
@@ -146,7 +173,21 @@ class AuthService {
     }
 
     try {
-      return await getIdToken(this.currentUser);
+      // Only force refresh if we're not already refreshing
+      if (!this.isRefreshing) {
+        this.isRefreshing = true;
+        try {
+          const token = await getIdToken(this.currentUser, true);
+          this.isRefreshing = false;
+          return token;
+        } catch (error) {
+          this.isRefreshing = false;
+          throw error;
+        }
+      } else {
+        // If already refreshing, just get the current token
+        return await getIdToken(this.currentUser, false);
+      }
     } catch (error) {
       console.error('Failed to get ID token:', error);
       return null;
@@ -157,10 +198,12 @@ class AuthService {
     return !!this.currentUser;
   }
 
-  getFirebaseUser(): FirebaseUser | null {
-    return this.currentUser;
+  // Cleanup method
+  destroy() {
+    if (this.tokenRefreshInterval) {
+      clearInterval(this.tokenRefreshInterval);
+    }
   }
 }
 
-export const authService = new AuthService();
-export default authService;
\ No newline at end of file
+export const authService = new AuthService();
\ No newline at end of file
diff --git a/frontend/src/services/documentService.ts b/frontend/src/services/documentService.ts
index a45c74f..0aaeddb 100644
--- a/frontend/src/services/documentService.ts
+++ b/frontend/src/services/documentService.ts
@@ -11,22 +11,40 @@ const apiClient = axios.create({
 });
 
 // Add auth token to requests
-apiClient.interceptors.request.use((config) => {
-  const token = authService.getToken();
+apiClient.interceptors.request.use(async (config) => {
+  const token = await authService.getToken();
   if (token) {
     config.headers.Authorization = `Bearer ${token}`;
   }
   return config;
 });
 
-// Handle auth errors
+// Handle auth errors with retry logic
 apiClient.interceptors.response.use(
   (response) => response,
-  (error) => {
-    if (error.response?.status === 401) {
+  async (error) => {
+    const originalRequest = error.config;
+    
+    if (error.response?.status === 401 && !originalRequest._retry) {
+      originalRequest._retry = true;
+      
+      try {
+        // Attempt to refresh the token
+        const newToken = await authService.getToken();
+        if (newToken) {
+          // Retry the original request with the new token
+          originalRequest.headers.Authorization = `Bearer ${newToken}`;
+          return apiClient(originalRequest);
+        }
+      } catch (refreshError) {
+        console.error('Token refresh failed:', refreshError);
+      }
+      
+      // If token refresh fails, logout the user
       authService.logout();
       window.location.href = '/login';
     }
+    
     return Promise.reject(error);
   }
 );
@@ -145,7 +163,7 @@ class DocumentService {
     // Always use optimized agentic RAG processing - no strategy selection needed
     formData.append('processingStrategy', 'optimized_agentic_rag');
 
-    const response = await apiClient.post('/documents', formData, {
+    const response = await apiClient.post('/api/documents', formData, {
       headers: {
         'Content-Type': 'multipart/form-data',
       },
@@ -165,7 +183,7 @@ class DocumentService {
    * Get all documents for the current user
    */
   async getDocuments(): Promise<Document[]> {
-    const response = await apiClient.get('/documents');
+    const response = await apiClient.get('/api/documents');
     return response.data;
   }
 
@@ -173,7 +191,7 @@ class DocumentService {
    * Get a specific document by ID
    */
   async getDocument(documentId: string): Promise<Document> {
-    const response = await apiClient.get(`/documents/${documentId}`);
+    const response = await apiClient.get(`/api/documents/${documentId}`);
     return response.data;
   }
 
@@ -181,7 +199,7 @@ class DocumentService {
    * Get document processing status
    */
   async getDocumentStatus(documentId: string): Promise<{ status: string; progress: number; message?: string }> {
-    const response = await apiClient.get(`/documents/${documentId}/progress`);
+    const response = await apiClient.get(`/api/documents/${documentId}/progress`);
     return response.data;
   }
 
@@ -189,7 +207,7 @@ class DocumentService {
    * Download a processed document
    */
   async downloadDocument(documentId: string): Promise<Blob> {
-    const response = await apiClient.get(`/documents/${documentId}/download`, {
+    const response = await apiClient.get(`/api/documents/${documentId}/download`, {
       responseType: 'blob',
     });
     return response.data;
@@ -199,14 +217,14 @@ class DocumentService {
    * Delete a document
    */
   async deleteDocument(documentId: string): Promise<void> {
-    await apiClient.delete(`/documents/${documentId}`);
+    await apiClient.delete(`/api/documents/${documentId}`);
   }
 
   /**
    * Retry processing for a failed document
    */
   async retryProcessing(documentId: string): Promise<Document> {
-    const response = await apiClient.post(`/documents/${documentId}/retry`);
+    const response = await apiClient.post(`/api/documents/${documentId}/retry`);
     return response.data;
   }
 
@@ -214,14 +232,14 @@ class DocumentService {
    * Save CIM review data
    */
   async saveCIMReview(documentId: string, reviewData: CIMReviewData): Promise<void> {
-    await apiClient.post(`/documents/${documentId}/review`, reviewData);
+    await apiClient.post(`/api/documents/${documentId}/review`, reviewData);
   }
 
   /**
    * Get CIM review data for a document
    */
   async getCIMReview(documentId: string): Promise<CIMReviewData> {
-    const response = await apiClient.get(`/documents/${documentId}/review`);
+    const response = await apiClient.get(`/api/documents/${documentId}/review`);
     return response.data;
   }
 
@@ -229,7 +247,7 @@ class DocumentService {
    * Export CIM review as PDF
    */
   async exportCIMReview(documentId: string): Promise<Blob> {
-    const response = await apiClient.get(`/documents/${documentId}/export`, {
+    const response = await apiClient.get(`/api/documents/${documentId}/export`, {
       responseType: 'blob',
     });
     return response.data;
@@ -239,7 +257,7 @@ class DocumentService {
    * Get document analytics and insights
    */
   async getDocumentAnalytics(documentId: string): Promise<any> {
-    const response = await apiClient.get(`/documents/${documentId}/analytics`);
+    const response = await apiClient.get(`/api/documents/${documentId}/analytics`);
     return response.data;
   }
 
@@ -247,7 +265,7 @@ class DocumentService {
    * Get global analytics data
    */
   async getAnalytics(days: number = 30): Promise<any> {
-    const response = await apiClient.get('/documents/analytics', {
+    const response = await apiClient.get('/api/documents/analytics', {
       params: { days }
     });
     return response.data;
@@ -257,7 +275,7 @@ class DocumentService {
    * Get processing statistics
    */
   async getProcessingStats(): Promise<any> {
-    const response = await apiClient.get('/documents/processing-stats');
+    const response = await apiClient.get('/api/documents/processing-stats');
     return response.data;
   }
 
@@ -265,7 +283,7 @@ class DocumentService {
    * Get agentic RAG sessions for a document
    */
   async getAgenticRAGSessions(documentId: string): Promise<any> {
-    const response = await apiClient.get(`/documents/${documentId}/agentic-rag-sessions`);
+    const response = await apiClient.get(`/api/documents/${documentId}/agentic-rag-sessions`);
     return response.data;
   }
 
@@ -273,7 +291,7 @@ class DocumentService {
    * Get detailed agentic RAG session information
    */
   async getAgenticRAGSessionDetails(sessionId: string): Promise<any> {
-    const response = await apiClient.get(`/documents/agentic-rag-sessions/${sessionId}`);
+    const response = await apiClient.get(`/api/documents/agentic-rag-sessions/${sessionId}`);
     return response.data;
   }
 
@@ -297,7 +315,7 @@ class DocumentService {
    * Search documents
    */
   async searchDocuments(query: string): Promise<Document[]> {
-    const response = await apiClient.get('/documents/search', {
+    const response = await apiClient.get('/api/documents/search', {
       params: { q: query },
     });
     return response.data;
@@ -307,7 +325,7 @@ class DocumentService {
    * Get processing queue status
    */
   async getQueueStatus(): Promise<{ pending: number; processing: number; completed: number; failed: number }> {
-    const response = await apiClient.get('/documents/queue/status');
+    const response = await apiClient.get('/api/documents/queue/status');
     return response.data;
   }