structlog's cache_logger_on_first_use=True causes module-level loggers
to permanently cache their processor chain on first use. Tests using
capture_logs() reconfigure processors, but cached loggers never pick up
the new configuration — resulting in empty capture lists.
Fixed by adding custom capture context managers that:
1. Temporarily disable logger caching
2. Replace the module-level logger with a fresh uncached instance
3. Restore original logger and config on exit
Fixes 11 LSP server stub scenarios and 2 retry policy wiring scenarios.
Renamed src/cleveragents/acp/ to src/cleveragents/a2a/ and all 13
Acp* classes to A2a* per ADR-047 (A2A Standard Adoption). Updated
all imports, structlog event names (acp.* → a2a.*), field names
(acp_version → a2a_version), and test references across the entire
codebase. This is a cosmetic rename only — no behavioral changes.
ISSUES CLOSED: #688
Added minimal LSP server entrypoint supporting initialize/shutdown/exit
handshake over JSON-RPC stdin/stdout transport with Content-Length
framing. Unsupported methods return MethodNotFound error with descriptive
message. Wired LSP requests through ACP facade in local mode. Added
agents lsp serve CLI command with --log-level flag, PID output, and
startup banner. Created reference documentation for the stub server.
Includes Behave BDD tests for protocol handshake, Robot smoke test, and
ASV startup latency benchmark.
ISSUES CLOSED: #203