ci: wire codemod --check suite + bundle gate into GitHub Actions

[adm01-debug]

Summary

Adds a regression gate that runs every codemod's --check mode on each PR, preventing reintroduction of categories already cleaned up (no-duplicate-imports, eqeqeq non-null, no-unused-vars, no-explicit-any safe patterns, lucide barrel imports) and the bundle-size budget (per-chunk gzip ≤ 500 kB).

Why

PRs #34 (bundle gate), #36 (eqeqeq cleanup), #37 (unused-vars cleanup), #38 (any→unknown cleanup), and the earlier #29 (eslint config + auto-fix) collectively cleared ~700 ESLint problems from the codebase. Without an enforcement gate, those gains regress on the next push that introduces a new == or unused import.

This PR is the gate. It's deliberately tolerant of in-flight codemod PRs so it can merge in any order with #34/#36/#37/#38 and progressively activate.

What's added

scripts/run-codemod-checks.mjs

Aggregating runner that invokes each codemod's --check mode in sequence and prints a unified pass/fail/skipped table:

▶ no-duplicate-imports                 OK
▶ eqeqeq (strict-equality)             OK
▶ no-unused-vars                       FAIL
   ✖ 3 file(s) have unused identifiers
   ...
▶ no-explicit-any (safe patterns)      OK
▶ lucide-react per-icon imports        skipped (script not present in this branch)

Summary: 3 pass, 1 fail, 1 skipped (of 5).

Two modes:

Mode	Missing script	Exit
default	skipped	0 if no fail
--strict	fail (script missing)	1

CI uses default mode for tolerance to merge order.

.github/workflows/lint-codemods.yml

Triggered on PRs touching src/, codemod scripts, eslint config, or package files. Two steps:

1. Codemod regression gates (npm run check:codemods)
2. Bundle size budget (scripts/bundle-analysis.mjs --check) — defensive: skipped if the script is absent, runs once it lands

package.json — npm script aliases

"check:codemods":          "node scripts/run-codemod-checks.mjs",
"check:duplicate-imports": "node scripts/codemod-merge-duplicate-imports.mjs --check",
"check:strict-equality":   "node scripts/codemod-strict-equality.mjs --check",
"check:unused-vars":       "node scripts/codemod-unused-vars.mjs --check",
"check:any-to-unknown":    "node scripts/codemod-any-to-unknown.mjs --check",
"check:lucide-imports":    "node scripts/codemod-lucide-imports.mjs --check",

Validation

Test	Result
YAML loads	✅
Default mode on this branch	exit 0 (5 skipped — codemods not landed yet)
--strict mode	exit 1 (5 fail (script missing) as expected)

When #34/#36/#37/#38 merge, the corresponding entries flip from skipped to OK on the next CI run, and any future regression flips them to FAIL, blocking the offending PR.

https://claude.ai/code/session_01KWeDG

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