[javimosch]

serve_on prints machweb on http://host:port to stdout. The agent-first
CLI contract puts that line on stderr — it is context, not data — and a
service whose stdout is JSON hands a parser a log line on startup.

This adds a silent variant rather than changing what existing callers do: same
bind, same exit-on-bind-failure, no announcement. The caller decides where its
own startup line goes.

machin-bkn uses it to meet cli-daemon-spec §1, which requires the
confirmation on stderr and nothing on stdout. Verified there: stdout is
empty, stderr carries [serve] listening on http://127.0.0.1:PORT, and the
191-assertion contract suite still passes.

Additive — no existing behaviour changes.

🤖 Generated with Claude Code

https://claude.ai/code/session_01XJdASnjD4R5h6xX2fzfMfk

Summary by CodeRabbit

• New Features
  • Added a server startup option that suppresses the startup banner. If binding fails, the server reports an error and exits with a failure status.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 4eb50138-c32d-46a7-8563-24ec9530562d

📥 Commits

Reviewing files that changed from the base of the PR and between b407ebe and 49c030f.

📒 Files selected for processing (1)

• framework/machweb.src

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

The change adds serve_on_quiet(host, port, handler). It serves accepted connections without printing a startup banner. If binding fails, it writes a JSON error to stderr and exits with status 1.

Changes

Machweb server startup

Layer / File(s)	Summary
Quiet server entry point framework/machweb.src	Adds serve_on_quiet, which binds to the specified host and port and dispatches accepted connections to machweb_handle in goroutines. It omits the startup banner. On bind failure, it writes a JSON error to stderr and exits with status 1.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 49c03

The quiet entry point leaves request serving and bind-failure behavior intact while avoiding a startup banner. No merge-blocking risk is evident.

Architecture Summary

Architecture risk: 🔵 Low · up to 49c03

The change affects 1 system.

Changed systems: framework

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — framework (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in framework/machweb.src: Added serve_on_quiet, which listens on the specified host and port and dispatches accepted connections to machweb_handle in goroutines. Unlike serve_on, it omits the startup announcement; on bind failure it writes a JSON error to stderr and exits with status 1.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely identifies the main change: adding the silent serve_on_quiet variant for callers that announce their own bind.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

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