added typeaheead and introspetion

docs/PHASE63-QUERY-PLAN-REVIEW.md

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+# Phase 63 — Query Plan Review
+
+Extends the existing EXPLAIN inspector with a conservative, read-only query-plan review panel.
+
+- Summarises MySQL tabular EXPLAIN steps and flags large full scans (estimated rows >= 10,000), extra sorting and temporary results.
+- Explains each finding and provides context-aware next steps without creating indexes or running SELECT statements.
+- Offers **Copy Review** to share a plain-text report with SQL and findings.
+- Supports both System, Light and Dark appearances through adaptive SwiftUI colours.
+- JSON EXPLAIN remains supported; switch to Table to use the per-step diagnostic rules.
+- Existing SQL autosuggest, persistent introspection, schema-change review and graph dashboards are preserved.
+
+The review uses optimizer estimates, not measured execution timings. An unflagged plan is not proof of good performance.
+
+Validation: static source checks and ZIP integrity only. Requires macOS Xcode build and live MySQL verification.