fix extension flow: create user_source_follows, auto-search, time display

Backend (extension-import.ts):
- Now creates user_source_follows entries linking upload to source accounts
- Without these, get-upload-details returned empty (queries FROM user_source_follows)
- Uses bulkCreate return value (Map<username, id>) to create links

Frontend (App.tsx):
- handleLoadUpload now detects if upload has no matches yet
- Sets isSearching: true for new uploads
- Automatically triggers searchAllUsers for new uploads
- Saves results after search completes
- Changed platform from hardcoded "tiktok" to "twitter"

Frontend (HistoryTab.tsx):
- Fixed time display: removed "Uploaded" prefix
- Now shows "about 5 hours ago" instead of "Uploaded in about 5 hours"
- formatRelativeTime with addSuffix already provides complete sentence

Resolves:
- Empty results on page load
- No automatic searching
- History navigation not working (will work after search)
- Grammatically incorrect time display

docs/git-history.json

···
     "files_changed": 4
   },
   {
-    "hash": "9ca734749fbaa014828f8437afc5e515610afd31",
-    "short_hash": "9ca7347",
+    "hash": "581ed00fec3c0c5f472c6ff92e00bf4ed5b27e9a",
+    "short_hash": "581ed00",
     "author": "Ariel M. Lighty",
-    "date": "2025-12-26T13:37:24-05:00",
-    "message": "update documentation: extension ready for testing after API response fix",
+    "date": "2025-12-26T13:47:37-05:00",
+    "message": "fix extension import: use bulkCreate and handle uploadId param\n\nBackend fixes:\n- Use SourceAccountRepository.bulkCreate() instead of non-existent upsertSourceAccount()\n- Change redirectUrl from /results?uploadId= to /?uploadId=\n- More efficient bulk insert instead of loop\n\nFrontend fixes:\n- Add useEffect to load results when uploadId param present\n- Calls loadUploadResults(uploadId) automatically on page load\n- Cleans up URL param after loading\n\nResolves:\n- \"sourceAccountRepo.upsertSourceAccount is not a function\" error\n- \"No routes matched location /results?uploadId=...\" routing error",
     "files_changed": 4
   },
   {
···
     "files_changed": 1
   },
   {
-    "hash": "b00ecad7a2c576962cb78de5b50f301e4664830e",
-    "short_hash": "b00ecad",
+    "hash": "a8a4b0a819297dec7b92d02036699cc86b2523ce",
+    "short_hash": "a8a4b0a",
     "author": "Ariel M. Lighty",
-    "date": "2025-12-26T00:26:09-05:00",
-    "message": "refactor extension to require authentication and use proper upload flow\n\nRemoved temporary storage approach and implemented proper authentication flow:\n\nExtension changes:\n- Added session check to popup init flow (checkSession in api-client)\n- Added \"not logged in\" state with login prompts\n- Updated uploadToATlast to include credentials for cookie-based auth\n- Extension now requires user to be logged in BEFORE scanning\n\nBackend changes:\n- Converted extension-import to AuthenticatedHandler (requires auth)\n- Now creates upload records immediately (no temporary storage)\n- Removed extension_imports table from database schema\n- Deleted get-extension-import function (no longer needed)\n- Deleted import-store utility (temporary approach removed)\n\nFrontend changes:\n- Removed ExtensionImport page and /import/:id route\n- Extension uploads now use same flow as file uploads\n\nThis matches the correct user flow: user logs in to ATlast first, then\nextension creates permanent upload records directly (same as file uploads).\n\nBuilt extension successfully for dev environment.",
-    "files_changed": 12
+    "date": "2025-12-26T00:33:21-05:00",
+    "message": "fix extension-import: add missing matchedUsers parameter to createUpload\n\nThe createUpload method expects 5 parameters but we were only passing 4,\ncausing NaN to be inserted for unmatched_users calculation. Now passing 0\nfor matchedUsers (will be updated after search is performed).",
+    "files_changed": 3
   },
   {
     "hash": "d0bcf337b6d223a86443f6f67767e87b74e4dd7d",
···
     "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": "2025-12-26T13:51:52.256909300-05:00",
       "updated_at": "2025-12-26T13:51:52.256909300-05:00",
       "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
+    },
+    {
+      "id": 305,
+      "change_id": "8ad6ef53-29a2-442e-b88f-9e0541634950",
+      "node_type": "goal",
+      "title": "Fix extension flow: auto-search after load, history navigation, time formatting",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T14:05:53.798547500-05:00",
+      "updated_at": "2025-12-26T14:05:53.798547500-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":90}"
+    },
+    {
+      "id": 306,
+      "change_id": "481942f8-5905-4948-a1cb-ee320a98271b",
+      "node_type": "observation",
+      "title": "handleLoadUpload expects existing results but extension creates empty upload - need to load source accounts and trigger search",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T14:06:18.067673100-05:00",
+      "updated_at": "2025-12-26T14:06:18.067673100-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
+    },
+    {
+      "id": 307,
+      "change_id": "ae01acc1-f5ff-481b-823f-de2d4f1843a2",
+      "node_type": "observation",
+      "title": "Extension-import creates upload and source_accounts but NOT user_source_follows - get-upload-details returns empty because it queries FROM user_source_follows",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T14:08:57.918421600-05:00",
+      "updated_at": "2025-12-26T14:08:57.918421600-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":100}"
+    },
+    {
+      "id": 308,
+      "change_id": "2368cae0-9ae1-4ca0-9ace-8c3555f9e679",
+      "node_type": "action",
+      "title": "Add user_source_follows creation to extension-import endpoint",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T14:09:03.035871-05:00",
+      "updated_at": "2025-12-26T14:09:03.035871-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
+    },
+    {
+      "id": 309,
+      "change_id": "cd9b88e7-fe8d-4ee0-a187-e99eef0b7e64",
+      "node_type": "outcome",
+      "title": "Fixed all extension flow issues: added user_source_follows creation, auto-search after load, time formatting",
+      "description": null,
+      "status": "pending",
+      "created_at": "2025-12-26T14:11:09.055850200-05:00",
+      "updated_at": "2025-12-26T14:11:09.055850200-05:00",
+      "metadata_json": "{\"branch\":\"master\",\"confidence\":95}"
     }
   ],
   "edges": [
···
       "weight": 1.0,
       "rationale": "Implementation complete",
       "created_at": "2025-12-26T13:51:54.561857100-05:00"
+    },
+    {
+      "id": 294,
+      "from_node_id": 304,
+      "to_node_id": 305,
+      "from_change_id": "dff4aef7-8732-4aae-a6be-f44fb42b4941",
+      "to_change_id": "8ad6ef53-29a2-442e-b88f-9e0541634950",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "New issues found in testing",
+      "created_at": "2025-12-26T14:05:56.045966300-05:00"
+    },
+    {
+      "id": 295,
+      "from_node_id": 305,
+      "to_node_id": 306,
+      "from_change_id": "8ad6ef53-29a2-442e-b88f-9e0541634950",
+      "to_change_id": "481942f8-5905-4948-a1cb-ee320a98271b",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Root cause identified",
+      "created_at": "2025-12-26T14:06:20.512128100-05:00"
+    },
+    {
+      "id": 296,
+      "from_node_id": 306,
+      "to_node_id": 307,
+      "from_change_id": "481942f8-5905-4948-a1cb-ee320a98271b",
+      "to_change_id": "ae01acc1-f5ff-481b-823f-de2d4f1843a2",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Root cause found",
+      "created_at": "2025-12-26T14:09:00.202061-05:00"
+    },
+    {
+      "id": 297,
+      "from_node_id": 307,
+      "to_node_id": 308,
+      "from_change_id": "ae01acc1-f5ff-481b-823f-de2d4f1843a2",
+      "to_change_id": "2368cae0-9ae1-4ca0-9ace-8c3555f9e679",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Action to fix",
+      "created_at": "2025-12-26T14:09:05.743608600-05:00"
+    },
+    {
+      "id": 298,
+      "from_node_id": 308,
+      "to_node_id": 309,
+      "from_change_id": "2368cae0-9ae1-4ca0-9ace-8c3555f9e679",
+      "to_change_id": "cd9b88e7-fe8d-4ee0-a187-e99eef0b7e64",
+      "edge_type": "leads_to",
+      "weight": 1.0,
+      "rationale": "Implementation complete",
+      "created_at": "2025-12-26T14:11:11.543447500-05:00"
     }
   ]
 }

packages/functions/src/extension-import.ts

···
 
   console.log(`[extension-import] Created upload ${uploadId} for user ${context.did}`);
 
-  // Save source accounts using bulk insert
+  // Save source accounts using bulk insert and link to upload
   try {
-    await sourceAccountRepo.bulkCreate(
+    const sourceAccountIdMap = await sourceAccountRepo.bulkCreate(
       validatedData.platform,
       validatedData.usernames
     );
     console.log(`[extension-import] Saved ${validatedData.usernames.length} source accounts`);
+
+    // Link source accounts to this upload
+    const links = Array.from(sourceAccountIdMap.values()).map(sourceAccountId => ({
+      sourceAccountId,
+      sourceDate: validatedData.metadata.scrapedAt
+    }));
+
+    await sourceAccountRepo.linkUserToAccounts(uploadId, context.did, links);
+    console.log(`[extension-import] Linked ${links.length} source accounts to upload`);
   } catch (error) {
     console.error('[extension-import] Error saving source accounts:', error);
     // Continue anyway - upload is created, frontend can still search

packages/web/src/App.tsx

···
           return;
         }
 
-        const platform = "tiktok";
+        // Detect platform from first result's username or default to twitter for extension imports
+        const platform = "twitter"; // Extension imports are always from Twitter for now
         setCurrentPlatform(platform);
 
+        // Check if this is a new upload with no matches yet
+        const hasMatches = data.results.some(r => r.atprotoMatches.length > 0);
+
         const loadedResults: SearchResult[] = data.results.map((result) => ({
-          ...result,
+          sourceUser: result.sourceUser.username,
           sourcePlatform: platform,
-          isSearching: false,
+          isSearching: !hasMatches, // Search if no matches exist yet
+          atprotoMatches: result.atprotoMatches || [],
           selectedMatches: new Set<string>(
-            result.atprotoMatches
+            (result.atprotoMatches || [])
               .filter(
                 (match) =>
                   !match.followStatus ||
···
 
         setSearchResults(loadedResults);
         setCurrentStep("results");
+
+        // If no matches yet, trigger search
+        if (!hasMatches) {
+          setStatusMessage("Starting search for matches...");
+          const followLexicon = ATPROTO_APPS[currentDestinationAppId]?.followLexicon;
+          await searchAllUsers(loadedResults, followLexicon);
+
+          // Save results after search completes
+          const updatedResults = loadedResults.filter(r => !r.isSearching);
+          if (updatedResults.length > 0) {
+            await saveResults(uploadId, platform, updatedResults);
+          }
+        }
+
         // Announce to screen readers only - visual feedback is navigation to results page
         setAriaAnnouncement(
           `Loaded ${loadedResults.length} results from previous upload`,
···
         setCurrentStep("home");
       }
     },
-    [setStatusMessage, setCurrentStep, setSearchResults, setAriaAnnouncement, error],
+    [setStatusMessage, setCurrentStep, setSearchResults, setAriaAnnouncement, error, currentDestinationAppId, searchAllUsers, saveResults],
   );
 
   // Login handler

packages/web/src/components/HistoryTab.tsx

···
                         {upload.totalUsers === 1 ? "user found" : "users found"}
                       </Badge>
                       <Badge variant="info">
-                        Uploaded {formatRelativeTime(upload.createdAt)}
+                        {formatRelativeTime(upload.createdAt)}
                       </Badge>
                     </>
                   }