Add side panels, task selection, graph animation, and project docs

- Foldable left panel (user profile) and right panel (task details)
- Clicking a task in the list or graph node selects it and shows details
- Both views (task list + graph) always mounted via absolute inset-0 for
  correct canvas dimensions; tabs toggle visibility with opacity
- Graph node selection animation: other nodes repel outward (charge -600),
  then selected node smoothly slides to center (500ms cubic ease-out),
  then charge restores to -120 and graph stabilizes
- Graph re-fits on tab switch and panel resize via ResizeObserver
- Fix UUID string IDs throughout (backend returns UUIDs, not integers)
- Add TaskDetailPanel, UserPanel components
- Add CLAUDE.md project documentation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/fraction.js/CHANGELOG.md

@@ -0,0 +1,38 @@
+# CHANGELOG
+
+v5.2.2
+    - Improved documentation and removed unecessary check
+
+v5.2.1:
+  - 2bb7b05: Added negative sign check
+
+v5.2:
+  - 6f9d124: Implemented log and improved simplify
+  - b773e7a: Added named export to TS definition
+  - 70304f9: Fixed merge conflict
+  - 3b940d3: Implemented other comparing functions
+  - 10acdfc: Update README.md
+  - ba41d00: Update README.md
+  - 73ded97: Update README.md
+  - acabc39: Fixed param parsing
+
+v5.0.5:
+  - 2c9d4c2: Improved roundTo() and param parser
+
+v5.0.4:
+  - 39e61e7: Fixed bignum param passing
+
+v5.0.3:
+  - 7d9a3ec: Upgraded bundler for code quality
+
+v5.0.2:
+  - c64b1d6: fixed esm export
+
+v5.0.1:
+  - e440f9c: Fixed CJS export
+  - 9bbdd29: Fixed CJS export
+
+v5.0.0:
+  - ac7cd06: Fixed readme
+  - 33cc9e5: Added crude build
+  - 1adcc76: Release breaking v5.0. Fraction.js now builds on BigInt. The API stays the same as v4, except that the object attributes `n`, `d`, and `s`, are not Number but BigInt and may break code that directly accesses these attributes.