refactor: low-regret cleanup across core, engine, dashboard
- core: extract ai-engine-loader.ts to share @fusion/engine dynamic-import
boilerplate between ai-summarize and memory-compaction (incl. AgentMessage
type); collapse getInbox/getOutbox, listInsights/countInsights,
listRuns/countRuns, and three hasProjectDb* variants behind shared helpers.
- core: drop unused pluginLoaderLog export; tighten two `any` casts
(db.walCheckpoint row, plugin-loader error.code).
- engine: extract resolveRoleFallback helper from buildSessionSkillContext/Sync;
remove 22 stale `eslint-disable no-explicit-any` directives across
project-engine, self-healing, triage, worktree-pool.
- dashboard: apply ESLint autofix (let→const, empty `interface extends`→type).
All three packages: typecheck clean, full test suites pass (14,414 tests),
builds clean. Net lint: -31 warnings. No public behavior changes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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