fix: save-results now updates existing uploads instead of skipping

Changed from hasRecentUpload time check to getUpload ID check.

Extension flow:
1. extension-import creates upload with no matches
2. Frontend searches and finds matches
3. save-results now UPDATES upload with matches (was skipping)

File upload flow still works:
- Upload doesn't exist -> creates it
- Upload exists -> updates it with new matches

Removes race condition where save within 5 seconds would be skipped.

docs/git-history.json

···
 [
   {
-    "hash": "6ced3f0b015af1c9126559a393996576402cfd03",
-    "short_hash": "6ced3f0",
+    "hash": "a90f3a813fd9527e8e59bb1da242e7b67555a8eb",
+    "short_hash": "a90f3a8",
     "author": "Ariel M. Lighty",
-    "date": "2025-12-26T14:12:46-05:00",
-    "message": "fix extension flow: create user_source_follows, auto-search, time display\n\nBackend (extension-import.ts):\n- Now creates user_source_follows entries linking upload to source accounts\n- Without these, get-upload-details returned empty (queries FROM user_source_follows)\n- Uses bulkCreate return value (Map<username, id>) to create links\n\nFrontend (App.tsx):\n- handleLoadUpload now detects if upload has no matches yet\n- Sets isSearching: true for new uploads\n- Automatically triggers searchAllUsers for new uploads\n- Saves results after search completes\n- Changed platform from hardcoded \"tiktok\" to \"twitter\"\n\nFrontend (HistoryTab.tsx):\n- Fixed time display: removed \"Uploaded\" prefix\n- Now shows \"about 5 hours ago\" instead of \"Uploaded in about 5 hours\"\n- formatRelativeTime with addSuffix already provides complete sentence\n\nResolves:\n- Empty results on page load\n- No automatic searching\n- History navigation not working (will work after search)\n- Grammatically incorrect time display",
-    "files_changed": 5
+    "date": "2025-12-26T16:11:04-05:00",
+    "message": "fix: pass onProgressUpdate and onComplete callbacks to searchAllUsers",
+    "files_changed": 3
   },
   {
     "hash": "6ced3f0b015af1c9126559a393996576402cfd03",
···
     "files_changed": 4
   },
   {
-    "hash": "95636330f387598f55017eda668fb9f91ccde509",
-    "short_hash": "9563633",
+    "hash": "9ca734749fbaa014828f8437afc5e515610afd31",
+    "short_hash": "9ca7347",
     "author": "Ariel M. Lighty",
-    "date": "2025-12-26T13:35:52-05:00",
-    "message": "fix extension api-client: unwrap ApiResponse.data structure\n\nBackend endpoints use successResponse() which wraps data in:\n  { success: true, data: {...} }\n\nExtension was expecting flat response structure, causing:\n- uploadToATlast to return undefined (missing importId, redirectUrl)\n- checkSession to return wrapped object instead of user data\n- Invalid URL error: \"http://127.0.0.1:8888undefined\"\n\nFixed both uploadToATlast and checkSession to access apiResponse.data",
-    "files_changed": 2
+    "date": "2025-12-26T13:37:24-05:00",
+    "message": "update documentation: extension ready for testing after API response fix",
+    "files_changed": 4
   },
   {
     "hash": "95636330f387598f55017eda668fb9f91ccde509",
···
     "files_changed": 3
   },
   {
-    "hash": "ba29fd68872913ba0a587aa7f29f97b3d373a732",
-    "short_hash": "ba29fd6",
+    "hash": "32cdee3aeac7ef986df47e0fff786b5f7471e55b",
+    "short_hash": "32cdee3",
     "author": "Ariel M. Lighty",
     "date": "2025-12-25T13:22:32-05:00",
     "message": "configure Netlify dev for monorepo with --filter flag\n\nFixed Netlify CLI monorepo detection issue by using --filter flag:\n- Updated root package.json scripts to use 'npx netlify-cli dev --filter @atlast/web'\n- Updated netlify.toml [dev] section to use npm with --prefix for framework command\n- Added monorepo development instructions to CLAUDE.md\n- Documented Windows Git Bash compatibility issue with netlify command\n\nSolution: Use 'npx netlify-cli dev --filter @atlast/web' to bypass monorepo\nproject selection prompt and specify which workspace package to run.\n\nDev server now runs successfully at http://localhost:8888 with all backend\nfunctions loaded.",
-    "files_changed": 5
+    "files_changed": 4
   },
   {
-    "hash": "32cdee3aeac7ef986df47e0fff786b5f7471e55b",
-    "short_hash": "32cdee3",
+    "hash": "ba29fd68872913ba0a587aa7f29f97b3d373a732",
+    "short_hash": "ba29fd6",
     "author": "Ariel M. Lighty",
     "date": "2025-12-25T13:22:32-05:00",
     "message": "configure Netlify dev for monorepo with --filter flag\n\nFixed Netlify CLI monorepo detection issue by using --filter flag:\n- Updated root package.json scripts to use 'npx netlify-cli dev --filter @atlast/web'\n- Updated netlify.toml [dev] section to use npm with --prefix for framework command\n- Added monorepo development instructions to CLAUDE.md\n- Documented Windows Git Bash compatibility issue with netlify command\n\nSolution: Use 'npx netlify-cli dev --filter @atlast/web' to bypass monorepo\nproject selection prompt and specify which workspace package to run.\n\nDev server now runs successfully at http://localhost:8888 with all backend\nfunctions loaded.",
-    "files_changed": 4
+    "files_changed": 5
   },
   {
     "hash": "c3e7afad396d130791d801a85cbfc9643bcd6309",

docs/graph-data.json

···
       "created_at": "2025-12-26T20:20:22.507291300-05:00",
       "updated_at": "2025-12-26T20:20:22.507291300-05:00",
       "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
+    },
+    {
+      "id": 318,
+      "change_id": "371f788d-46df-4651-b338-f9310f8ae810",
+      "node_type": "goal",
+      "title": "Fix results not saving to database and timestamp timezone issue",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T20:37:03.493239600-05:00",
+      "updated_at": "2025-12-26T20:37:03.493239600-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":90}"
+    },
+    {
+      "id": 319,
+      "change_id": "28681ed9-6d12-476e-a60d-291ee2034952",
+      "node_type": "observation",
+      "title": "save-results has hasRecentUpload check that skips saving if upload created within 5 seconds - extension-import creates upload then save-results is called immediately, gets skipped!",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T20:37:34.735156200-05:00",
+      "updated_at": "2025-12-26T20:37:34.735156200-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":100}"
+    },
+    {
+      "id": 320,
+      "change_id": "04f6a182-c5a1-4844-b186-24605a8e74a9",
+      "node_type": "action",
+      "title": "Fix save-results to skip duplicate check for extension uploads and handle timestamps correctly",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T20:38:45.703038700-05:00",
+      "updated_at": "2025-12-26T20:38:45.703038700-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
+    },
+    {
+      "id": 321,
+      "change_id": "ac843fbc-1953-4b61-8ef3-4c88c98572f5",
+      "node_type": "outcome",
+      "title": "Fixed save-results to check if upload exists by ID instead of recent time check - extension flow now saves matches",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T20:39:45.657720100-05:00",
+      "updated_at": "2025-12-26T20:39:45.657720100-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
     }
   ],
   "edges": [
···
       "weight": 1.0,
       "rationale": "Goal achieved",
       "created_at": "2025-12-26T20:20:26.885283800-05:00"
+    },
+    {
+      "id": 309,
+      "from_node_id": 317,
+      "to_node_id": 318,
+      "from_change_id": "3a24a4a2-b4d0-4629-a29b-b33994d50e75",
+      "to_change_id": "371f788d-46df-4651-b338-f9310f8ae810",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "New issues found",
+      "created_at": "2025-12-26T20:37:06.303637800-05:00"
+    },
+    {
+      "id": 310,
+      "from_node_id": 318,
+      "to_node_id": 319,
+      "from_change_id": "371f788d-46df-4651-b338-f9310f8ae810",
+      "to_change_id": "28681ed9-6d12-476e-a60d-291ee2034952",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Root cause found",
+      "created_at": "2025-12-26T20:37:37.527168300-05:00"
+    },
+    {
+      "id": 311,
+      "from_node_id": 319,
+      "to_node_id": 320,
+      "from_change_id": "28681ed9-6d12-476e-a60d-291ee2034952",
+      "to_change_id": "04f6a182-c5a1-4844-b186-24605a8e74a9",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Action to fix",
+      "created_at": "2025-12-26T20:38:48.486046-05:00"
+    },
+    {
+      "id": 312,
+      "from_node_id": 320,
+      "to_node_id": 321,
+      "from_change_id": "04f6a182-c5a1-4844-b186-24605a8e74a9",
+      "to_change_id": "ac843fbc-1953-4b61-8ef3-4c88c98572f5",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Implementation complete",
+      "created_at": "2025-12-26T20:39:48.757903800-05:00"
     }
   ]
 }

packages/functions/src/save-results.ts

···
   const matchRepo = new MatchRepository();
   let matchedCount = 0;
 
-  const hasRecent = await uploadRepo.hasRecentUpload(context.did);
-  if (hasRecent) {
-    console.log(
-      `User ${context.did} already saved within 5 seconds, skipping duplicate`,
+  // Check if this specific upload already exists
+  const existingUpload = await uploadRepo.getUpload(uploadId, context.did);
+
+  if (!existingUpload) {
+    // Upload doesn't exist - create it (file upload flow)
+    await uploadRepo.createUpload(
+      uploadId,
+      context.did,
+      sourcePlatform,
+      results.length,
+      0,
     );
-    return successResponse({
-      success: true,
-      message: "Recently saved",
-    });
+  } else {
+    // Upload exists (extension flow) - just update it with matches
+    console.log(`[save-results] Updating existing upload ${uploadId} with matches`);
   }
-
-  await uploadRepo.createUpload(
-    uploadId,
-    context.did,
-    sourcePlatform,
-    results.length,
-    0,
-  );
 
   const allUsernames = results.map((r) => r.sourceUser.username);
   const sourceAccountIdMap = await sourceAccountRepo.bulkCreate(