Move files tab and file pages to be accessible via contracts (#28)

* feat: remove Files from top-level navigation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat: update file links to use contract-scoped routes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat: add contract context to FileDetail component

- Add contractId, contractName, and onContractClick props to FileDetailProps
- Update breadcrumb navigation to show contract name with path separator
  when viewing file within a contract context
- Fall back to "Back to list" when no contract context is provided
- This enables the FileDetail component to be used within the
  /contracts/:contractId/files/:fileId route

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* feat: update routes to nest files under contracts

- Add react-router-dom for client-side routing
- Create ContractList component to list all contracts
- Create ContractDetail component with tabs (overview, files, tasks, repos)
- Create FileDetail component to view individual files
- Configure routes:
  - /contracts - list all contracts
  - /contracts/:id - view contract details with Files tab
  - /contracts/:contractId/files/:fileId - view file in contract context
- Remove standalone file routes (/files, /files/:id)

Files are now only accessible through their parent contract.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Task completion checkpoint

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* feat: Add contract-scoped file route /contracts/:id/files/:fileId

- Create ContractFilePage component for viewing files within contract context
- Add route for /contracts/:id/files/:fileId in main.tsx
- Update handleFileSelect in contracts.tsx to navigate to contract-scoped file URL
- File viewer now has "Back to Contract" navigation instead of standalone /files

This allows files accessed from a contract to maintain context and return
to the contract page when going back.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Task completion checkpoint

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/makima/frontend/src/main.tsx b/makima/frontend/src/main.tsx
index 0464495..383b732 100644
--- a/makima/frontend/src/main.tsx
+++ b/makima/frontend/src/main.tsx
@@ -17,6 +17,7 @@ import MeshPage from "./routes/mesh";
 import HistoryPage from "./routes/history";
 import LoginPage from "./routes/login";
 import SettingsPage from "./routes/settings";
+import ContractFilePage from "./routes/contract-file";
 import TemplatesPage from "./routes/templates";
 
 createRoot(document.getElementById("root")!).render(
@@ -71,6 +72,14 @@ createRoot(document.getElementById("root")!).render(
             }
           />
           <Route
+            path="/contracts/:id/files/:fileId"
+            element={
+              <ProtectedRoute>
+                <ContractFilePage />
+              </ProtectedRoute>
+            }
+          />
+          <Route
             path="/workflow"
             element={
               <ProtectedRoute>