13b2f5e14d
Removes five unused funcs/vars/fields that golangci-lint had been flagging (anthropic.toolCallDoneEvent, mistral.translateMessages, hook.newError, subprocess.vibeParser.lastAssistantMsgID, tui.cBase), two ineffectual assignments (tui/rendering.go visible-window loop, subprocess stream_test setup), and a stale if/HasPrefix that's now a strings.TrimPrefix. Wires errcheck onto every subprocess / stream lifecycle path so a failed close or shutdown is at least logged rather than silently dropped: - engine/loop.go: stream.Close on both the error and success paths - mcp/manager.go: Shutdown when StartAll partial-fails; Transport close after Initialize failure - mcp/transport.go: stdin.Close + syscall.Kill on graceful-timeout fallback - slm/download.go: Close propagated as a named-return error on the success path; explicitly discarded on the rollback path - slm/classifier.go, slm/manager.go, hook/prompt.go, context/summarize.go, config/write.go, cmd/gnoma/main.go, tool/fs/grep.go: explicit ignores or error logging on Close / Shutdown / WalkDir / Scanln Production-code errcheck and ineffassign are now zero. Remaining golangci-lint output is test-only Close-in-defer noise plus stylistic staticcheck QF suggestions, left alone.