wire up /agent/execute and /agent/stop endpoints

- Add runSessionAgent: streaming variant of runAgent that PATCHes VIBN DB
  after every LLM turn and tool call so frontend can poll live output
- Track changed files from write_file / replace_in_file tool calls
- Add /agent/execute: receives sessionId + giteaRepo + task, clones repo,
  scopes workspace to appPath, runs Coder agent async (returns 202 immediately)
- Add /agent/stop: sets stopped flag; agent checks between turns and exits cleanly
- Agent does NOT commit on completion — leaves changes for user review/approval

Made-with: Cursor

dist/tools/index.js

@@ -12,6 +12,7 @@ require("./agent");
 require("./memory");
 require("./skills");
 require("./prd");
+require("./search");
 // Re-export the public API — identical surface to the old tools.ts
 var registry_1 = require("./registry");
 Object.defineProperty(exports, "ALL_TOOLS", { enumerable: true, get: function () { return registry_1.ALL_TOOLS; } });