feat: add DX framework resolver for shared principles and scoring rubric

New {{DX_FRAMEWORK}} resolver provides compact (~150 lines) shared content
for /plan-devex-review and /devex-review: Addy Osmani's 8 DX principles,
7 characteristics table, 10 cognitive patterns, scoring rubric, and TTHW
benchmarks. Hall of Fame examples loaded on-demand per pass to avoid bloat.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/resolvers/index.ts

@@ -17,6 +17,7 @@ import { generateLearningsSearch, generateLearningsLog } from './learnings';
 import { generateConfidenceCalibration } from './confidence';
 import { generateInvokeSkill } from './composition';
 import { generateReviewArmy } from './review-army';
+import { generateDxFramework } from './dx';
 
 export const RESOLVERS: Record<string, ResolverFn> = {
   SLUG_EVAL: generateSlugEval,
@@ -59,4 +60,5 @@ export const RESOLVERS: Record<string, ResolverFn> = {
   INVOKE_SKILL: generateInvokeSkill,
   CHANGELOG_WORKFLOW: generateChangelogWorkflow,
   REVIEW_ARMY: generateReviewArmy,
+  DX_FRAMEWORK: generateDxFramework,
 };