feat: remove applied rules from chat history

[RomneyDa]

Description

Original author @etherandrius (Co-authored here).
#7343 was stale, addressed comments and reworked here.
See discussion on ^

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Summary by cubic

Stop storing rule text in chat history and dev data. We now keep only rule metadata to reduce payload size and improve privacy, while keeping a quick way to open the full rule when needed.

• Refactors

  • appliedRules now uses RuleMetadata (no rule text) across core and GUI.
  • getSystemMessageWithRules returns metadata; rule text is used only to build the system message.
  • Removed rule text from analytics payloads and schema.
  • Added useOpenRule and updated RulesPeek and RulesSection to open the rule source (default URL for default-* rules, file for others).
  • Updated getRuleId and rules-utils to work with RuleMetadata.

• Migration

  • Remove any use of appliedRules.rule; open the source file or default URL instead.
  • Update types where appliedRules was RuleWithSource to RuleMetadata.
  • No user action needed; new chats no longer persist rule content.

^{Written for commit d7cc498. Summary will update automatically on new commits.}

[github-actions]

✅ Review Complete

Code Review Summary

⚠️ Continue API authentication failed. Please check your CONTINUE_API_KEY.

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[cubic-dev-ai]

No issues found across 11 files