feat: update AI automation agents, add reviewer agent, fix leaks, enhance CI

Agents:
- cmake-expert: fix stale CMake version (4.1 -> 3.22), add OpenSSL/xxHash deps
- integrator: fix stale test.py references to tests/integration/, update CI docs
- test-writer: update integration test patterns for modular test structure
- reviewer: new comprehensive PR reviewer (code, build, CI, docs, quality)

Bug fixes:
- delta.c: set instructions[i].type = DELTA_INSTR_LITERAL in deserialize
- scanner.c: free ArrayList when directory_scanner_next returns NULL

CI:
- Add sanitizer job (ASan + UBSan) that catches real leaks
- Add clang-tidy job with proper warning/error detection
- Remove || true masking (fixes now make sanitizer useful)

.gitea/workflows/ci.yaml

@@ -42,7 +42,7 @@ jobs:
         run: ./build/tests
 
       - name: Integration Tests
-        run: LSAN_OPTIONS=suppressions=.lsan-suppressions.txt python3 -m pytest tests/ -v --tb=short
+        run: python3 -m pytest tests/ -v --tb=short
 
   clang-tidy:
     runs-on: ubuntu-latest

.gitignore

@@ -2,4 +2,3 @@ build
 data_copied
 test_data/
 __pycache__/
-build-asan/

.lsan-suppressions.txt

@@ -1,6 +0,0 @@
-# LSAN suppressions for FastSync
-# Pre-existing leaks — not introduced by this PR.
-# Remove these as each leak is fixed.
-
-# Config object never freed at CLI exit (main allocates, OS reclaims)
-leak:config_create