feat: Add Git page with branch selector, commit history, and diff viewer

Includes FileTree, CommitList, BranchSelector and DiffViewer components,
Git API routes, and mobile keyboard visibility handling for FAB buttons

server/routes/index.ts

@@ -10,6 +10,7 @@ import { handleTables, handleStats, handleTableSchema, handleTableData, handleQu
 import { handleWhisperRoutes } from './whisper'
 import { handleRecordingsRoutes } from './recordings'
 import { handleClaudeStatus } from './claude-status'
+import { handleGitStatus, handleGitDiff, handleGitLog, handleGitLogCommit, handleGitCompare, handleGitBranches, handleGitCurrentBranch } from './git'
 
 export async function handleRequest(req: Request): Promise<Response> {
   const url = new URL(req.url)
@@ -189,5 +190,35 @@ export async function handleRequest(req: Request): Promise<Response> {
     if (res) return res
   }
 
+  // Git
+  if (path === '/api/git/status' && req.method === 'GET') {
+    return handleGitStatus()
+  }
+
+  if (path === '/api/git/diff' && req.method === 'GET') {
+    return handleGitDiff(url)
+  }
+
+  if (path === '/api/git/log' && req.method === 'GET') {
+    return handleGitLog(url)
+  }
+
+  const gitLogCommitMatch = path.match(/^\/api\/git\/log\/([a-f0-9]+)$/)
+  if (gitLogCommitMatch && req.method === 'GET') {
+    return handleGitLogCommit(gitLogCommitMatch[1])
+  }
+
+  if (path === '/api/git/compare' && req.method === 'POST') {
+    return handleGitCompare(req)
+  }
+
+  if (path === '/api/git/branches' && req.method === 'GET') {
+    return handleGitBranches()
+  }
+
+  if (path === '/api/git/branch/current' && req.method === 'GET') {
+    return handleGitCurrentBranch()
+  }
+
   return notFoundResponse()
 }