Add tm_server with SQLite, Svelte UI, and task-master TUI sync.

Introduces the web backend (auth, RBAC, project tokens, revisions),
YouTrack-or-taskmaster backend choice in the TUI, and a first-pass
embedded Svelte UI. The frontend is functional but needs a major rework.

Co-authored-by: Cursor <cursoragent@cursor.com>

.gitea/workflows/ci.yaml

@@ -29,6 +29,9 @@ jobs:
       - name: Build
         run: make build
 
+      - name: Build server
+        run: make build-server
+
       - name: Version
         run: make version
 
@@ -36,7 +39,9 @@ jobs:
         uses: actions/upload-artifact@v3
         with:
           name: tm
-          path: ./bin/tm
+          path: |
+            ./bin/tm
+            ./bin/tm_server
 
       - run: echo "This job's status is ${{ job.status }}."