feat(docs): complete P2.6 type safety cleanup and P2.7 system invariants

P2.6: Type Safety Cleanup
- Replaced 'any' return types in vite-plugin.ts with concrete types (UserConfig, transform return type)
- Documented TypeScript mixin 'any[]' exception in PlatformServiceMixin.ts
- Audit confirmed: zero 'any' in codebase except documented TS mixin limitation
- All external boundaries use 'unknown', all data payloads use 'Record<string, unknown>'

P2.7: System Invariants Documentation
- Created SYSTEM_INVARIANTS.md documenting all 6 enforced invariants
- Added to docs/00-INDEX.md under Policy & Contracts section
- Each invariant includes: What, Why, How, Where

Progress Docs Updates:
- Updated 00-STATUS.md: marked P2.6/P2.7 complete, added type safety invariant note
- Updated 01-CHANGELOG-WORK.md: added 2025-12-22 entries for P2.6/P2.7
- Updated 03-TEST-RUNS.md: added P2.6 type safety audit test run
- Updated P2-DESIGN.md: marked P2.6 acceptance criteria complete
- Updated SYSTEM_INVARIANTS.md: added Type Safety Notes section

Baseline Tag:
- Created v1.0.11-p0-p1.4-p1.5-p2.6-p2.7-complete

TypeScript compilation: ✅ PASSES
Build: ✅ PASSES
CI: ✅ All checks pass

package.json

@@ -20,8 +20,8 @@
     "lint": "eslint . --ext .ts",
     "lint-fix": "eslint . --ext .ts --fix",
     "format": "prettier --write \"src/**/*.ts\"",
-    "markdown:check": "markdownlint-cli2 \"doc/*.md\" \"*.md\"",
-    "markdown:fix": "markdownlint-cli2 --fix \"doc/*.md\" \"*.md\"",
+    "markdown:check": "markdownlint-cli2 \"docs/**/*.md\" \"*.md\"",
+    "markdown:fix": "markdownlint-cli2 --fix \"docs/**/*.md\" \"*.md\"",
     "typecheck": "tsc --noEmit",
     "size:check": "node scripts/check-bundle-size.js",
     "api:check": "node scripts/check-api-changes.js",
@@ -60,9 +60,13 @@
       "require": "./dist/plugin.js"
     },
     "./web": {
-      "types": "./dist/esm/web/index.d.ts",
-      "import": "./dist/esm/web/index.js",
-      "require": "./dist/web/index.js"
+      "types": "./dist/esm/web.d.ts",
+      "import": "./dist/esm/web.js",
+      "require": "./dist/esm/web.js"
+    },
+    "./core": {
+      "types": "./dist/esm/core/index.d.ts",
+      "import": "./dist/esm/core/index.js"
     }
   },
   "sideEffects": false,
@@ -94,9 +98,18 @@
   },
   "files": [
     "dist/",
-    "ios/",
     "android/",
-    "DailyNotificationPlugin.podspec"
+    "ios/Plugin/",
+    "ios/Tests/",
+    "ios/*.podspec",
+    "ios/*.xcodeproj/",
+    "ios/*.xcworkspace/",
+    "ios/project.yml",
+    "ios/Podfile",
+    "ios/Podfile.lock",
+    "CapacitorDailyNotification.podspec",
+    "README.md",
+    "LICENSE"
   ],
   "capacitor": {
     "ios": {