Polish

Start the dev server, open the feature in a browser, and iterate. You use the feature, say what feels off, and fixes happen.

Phase 0: Get on the right branch

1. If a PR number or branch name was provided, check it out (probe for existing worktrees first).
2. If blank, use the current branch.
3. Verify the current branch is not main/master.

Phase 1: Start the dev server

The scripts below ship in this skill's scripts/ directory. The Bash tool's working directory is the user's project, not the skill directory, so a bare scripts/<name> path will not resolve — invoke each by the skill's own absolute path. Every runnable block below sets SKILL_DIR inline (shell state does not persist between Bash tool calls, so each command must carry it); replace the <absolute path …> placeholder with the directory you loaded this ce-polish SKILL.md from before running.

1.1 Check for .claude/launch.json

SKILL_DIR="<absolute path of the directory containing this SKILL.md>"
bash "$SKILL_DIR/scripts/read-launch-json.sh"

If it finds a configuration, use it — the user already told us how to start the project.

1.2 Auto-detect (when no launch.json)

Identify the framework:

SKILL_DIR="<absolute path of the directory containing this SKILL.md>"
bash "$SKILL_DIR/scripts/detect-project-type.sh"

Route by type to the matching recipe reference for start command and port defaults:

Type	Recipe
rails	references/dev-server-rails.md
next	references/dev-server-next.md
vite	references/dev-server-vite.md
nuxt	references/dev-server-nuxt.md
astro	references/dev-server-astro.md
remix	references/dev-server-remix.md
sveltekit	references/dev-server-sveltekit.md
procfile	references/dev-server-procfile.md
unknown	Ask the user how to start the project

For framework types that need a package manager, run the resolver and substitute the result into the start command:

SKILL_DIR="<absolute path of the directory containing this SKILL.md>"
bash "$SKILL_DIR/scripts/resolve-package-manager.sh"

Resolve the port:

SKILL_DIR="<absolute path of the directory containing this SKILL.md>"
bash "$SKILL_DIR/scripts/resolve-port.sh" --type <type>

1.3 Start the server

Start the dev server in the background, log output to a temp file. Probe http://localhost:<port> for up to 30 seconds. If it doesn't come up, show the last 20 lines of the log and ask the user what to do.

1.4 Open in browser

Load references/ide-detection.md for the env-var probe table. Open the browser using the IDE's mechanism (Claude Code → open, Cursor → Cursor browser, VS Code → Simple Browser).

Tell the user:

Dev server running on http://localhost:<port>
Browse the feature and tell me what could be better.

Phase 2: Iterate

This is the core loop. The user browses the feature and tells you what to improve. You fix it. Repeat until they're happy.

• When the user describes something to fix → make the change, the dev server hot-reloads
• When the user asks to check something → use agent-browser to screenshot or inspect the page
• When the user says they're done → commit the fixes and stop

No checklist. No envelope. Just conversation.

References

Reference files (loaded on demand):

• references/launch-json-schema.md — launch.json schema + per-framework stubs
• references/ide-detection.md — host IDE detection and browser-handoff
• references/dev-server-detection.md — port resolution documentation
• references/dev-server-rails.md — Rails dev-server defaults
• references/dev-server-next.md — Next.js dev-server defaults
• references/dev-server-vite.md — Vite dev-server defaults
• references/dev-server-nuxt.md — Nuxt dev-server defaults
• references/dev-server-astro.md — Astro dev-server defaults
• references/dev-server-remix.md — Remix dev-server defaults
• references/dev-server-sveltekit.md — SvelteKit dev-server defaults
• references/dev-server-procfile.md — Procfile-based dev-server defaults

Scripts (invoked via bash "$SKILL_DIR/scripts/<name>" — see Phase 1 for SKILL_DIR):

• scripts/read-launch-json.sh — launch.json reader
• scripts/detect-project-type.sh — project-type classifier
• scripts/resolve-package-manager.sh — lockfile-based package-manager resolver
• scripts/resolve-port.sh — port resolution cascade