fix(query): stop repeated tool-failure loops

[chioarub]

Summary

• Add a query-level tool failure loop guard that tracks repeated failing tool results by tool/error category, error category, and normalized path.
• Stop the query loop with a clear assistant-visible diagnostic before another model call when repeated failures hit the threshold.
• Cover repeated write/edit failures, invalid fallback tool calls, synthetic user interruptions/rejections, success resets, threshold parsing, and integration ordering.

Why

Issue #1102 reports runaway loops where the model repeatedly retries failed file writes/edits or invalid fallback tool calls, burning tokens without making progress. This change adds a small circuit breaker in the query loop rather than refactoring individual tools.

This does not repair the underlying file-write failure or provider/tool-schema issue. It stops the runaway loop and gives the user a concrete diagnostic so they can inspect permissions, paths, or tool schema before retrying.

Validation

• bun test src/query/toolFailureLoopGuard.test.ts passed: 22 tests.
• bun run build passed.
• git diff --check passed.
• bun run typecheck still fails on existing repo-wide snapshot/type issues unrelated to this change, including missing modules/exports and pre-existing src/query.ts references outside the guard path.