release: 5.0.0-alpha.3 - Smart-Resume foundation (chunk-hash + index)

Plan 04 abgeschlossen.
- schema-v5.ts: chunk_index table (item_id, chunk_seq, sha1_hex, bytes)
- src/main/infra/chunk-hash.ts: sha1 buffer + streaming file
- src/main/domain/chunk-index-store.ts: CRUD + dedupe lookup
- 143 unit tests (vorher 126, +17 fuer schema + hash + store)
- npm run test:e2e:release gruen

Integration mit dem live Recorder folgt in Plan 04b. Plan 04 ist rein
additiv; kein bestehender Recorder-Code wurde modifiziert.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "twitch-vod-manager",
-  "version": "5.0.0-alpha.2",
+  "version": "5.0.0-alpha.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "twitch-vod-manager",
-      "version": "5.0.0-alpha.2",
+      "version": "5.0.0-alpha.3",
       "license": "MIT",
       "dependencies": {
         "axios": "^1.6.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "twitch-vod-manager",
-  "version": "5.0.0-alpha.2",
+  "version": "5.0.0-alpha.3",
   "description": "Twitch VOD Manager - Download Twitch VODs easily",
   "main": "dist/main.js",
   "author": "xRangerDE",