Move path-specific guidance into .claude/rules

[solcott]

Summary

Most of what breaks in this repo fails silently. The guidance for it was kept in skills, and AGENTS.md asked the agent to "read the matching skill before editing". That only worked when the model remembered to. This PR moves those per-directory invariants into path-scoped rules (.claude/rules/*.md with paths: frontmatter). Claude Code loads a rule automatically whenever a matching file is read.

• 11 new rules: swift-export, network, web, desktop, app-icons, compose-ui, compose-resources, screens, metro-graph, build-scripts, kmp-tests. .gitignore now un-ignores .claude/rules/.
• Skills:
  • network-apollo, web-app, apple-app-icons and compose-previews are deleted; their content is now in rules in full.
  • desktop-app is trimmed to hot reload and the MCP server, dependency-bump to its verification procedure, and add-screen points to the rules instead of repeating them.
  • apple-app, verify, pr-review and compose-fonts stay as task skills.
• AGENTS.md (26.5k → ~20k chars, always loaded):
  • It now routes to rules by path and to skills by task.
  • Content a session can derive from the code is dropped: migration history, package naming, SDK levels, and the daemon JVM block.
  • Platform commands and build-script detail moved into their rules.
• Stale facts corrected:
  • detekt runs on every module via the conventions, with ModifierMissing/ModifierNotUsedAtRoot active and run by CI's ./gradlew build. AGENTS.md and the compose-conventions agent still said it covered only build-logic.
  • The live config is config/detekt/detekt.yml. detekt/detekt.yml looks like a leftover and is left in place.
  • "Thirteen modules" is now eleven.
  • The Testing row is now kotlin.test + Turbine.
• renovate.json5 comments point at the network rule instead of the deleted skill. The rule also gains the sql.js "declared twice, must match" invariant, which only Renovate's config recorded before.

Test plan

• Documentation only; no source changes, so verify requires no build.
• No references to the deleted skills remain (git grep).
• Every item in verify's "fails at runtime with a clean build" list is covered by a rule.
• In a fresh session, open a file under one rule's paths: and confirm the rule loads, then open an unrelated file and confirm it does not.

🤖 Generated with Claude Code