1. Fix swallowed persist_config errors (app-server/lib.rs:882,896)
- Log errors when config persistence fails after set/unset
- Users previously got success response even when disk write failed
2. Fix swallowed job store load error (core/lib.rs:751)
- Add warning log when job store fails to load at startup
- Previously silently started with empty job list on corruption
3. Fix silent config parse failures (config/lib.rs:1590)
- Log warning when project config TOML is malformed
- Previously returned None indistinguishable from 'no config file'
4. Fix MCP connect_all errors swallowed (mcp.rs:2151,2189)
- Log warnings for each server that fails to connect
- Previously returned incomplete resource list with no indication
5. Fix error context stripped in engine status (core/engine.rs:2223)
- Use {err:#} format to include full error chain
- Was inconsistent with line 2234 which already used {err:#}
6. Fix tool audit log failures silently dropped (tool_execution.rs:122-136)
- Log each failure: serialization, directory creation, file open, write
- Previously silently dropped all errors for security audit trail
7. Fix Err(_) arms discarding error info (runtime_log.rs:179, runtime_threads.rs:828)
- Log stderr redirect failures on Windows
- Log poisoned mutex in pending_approvals
8. Fix env var parsing errors silently ignored (config/lib.rs:2519-2530)
- Warn when DEEPSEEK_TELEMETRY, DEEPSEEK_YOLO, DEEPSEEK_HTTP_HEADERS
have invalid values instead of silently treating as unset
9. Fix MCP config reload errors swallowed (mcp.rs:2011)
- Log config reload errors instead of complete silence
10. Fix .expect() on sub-agent runtime (core/engine.rs:1715)
- Gracefully fall back to basic tool set when API client missing
- Previously panicked if subagents enabled but no client configured
11. Fix .expect() on goal objective (core/engine.rs:2543)
- Use safe if-let pattern instead of check+expect
- Prevents panic if refactoring changes control flow
huqiantao
ef4dc5ca61