P3-P5: SubAgent SDK, Telegram Channel, SQLite persistence, full pipeline

P3 - SubAgent SDK:
  - src/subagent.ts: researcher, coder, analyst, content-writer
  - Mind.runSubAgent() → SubAgentFactory.create() → execute()
  - Результаты сохраняются в long-term memory
  - Heartbeat.notify(subagent-complete) после завершения

P4 - SQLite persistence (5 таблиц, WAL):
  - src/database.ts: thoughts, notepads, self_observations, long_term, embeddings
  - memory.ts → Database (полная замена in-memory)
  - index.ts: dbPath → ~/.local/share/spark-mind/spark-mind.db

P5 - Telegram Channel Layer:
  - src/telegram.ts: https module (SNI fix), MAX Messenger API
  - mind.ts: sendReply() → Telegram + console fallback
  - index.ts: TelegramMessenger(config) → Mind

Fixes:
  - FK constraint: long_term INSERT → long_term_embeddings INSERT
  - JSON parse: nested objects, markdown fences
  - P5 telegram: graceful degradation on SSL error

package-lock.json

@@ -8,11 +8,25 @@
       "name": "spark-mind",
       "version": "1.0.0",
       "license": "ISC",
+      "dependencies": {
+        "better-sqlite3": "^13.0.3"
+      },
       "devDependencies": {
+        "@types/better-sqlite3": "^9.6.0",
         "@types/node": "^26.5.0",
         "typescript": "^7.0.2"
       }
     },
+    "node_modules/@types/better-sqlite3": {
+      "version": "9.6.0",
+      "resolved": "https://registry.npmjs.org/@types/better-sqlite3/-/better-sqlite3-9.6.0.tgz",
+      "integrity": "sha512-ZEEwBSgMu7GYJOynoagg5X9JbxfL6dTJDsgViJIqh67jV44kyOr9RXfmFjLK5rzC4MWssP06t9hu/JwGDnUbCg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/node": {
       "version": "26.5.0",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-26.5.0.tgz",
@@ -363,6 +377,27 @@
         "node": ">=16.20.0"
       }
     },
+    "node_modules/better-sqlite3": {
+      "version": "13.0.3",
+      "resolved": "https://registry.npmjs.org/better-sqlite3/-/better-sqlite3-13.0.3.tgz",
+      "integrity": "sha512-RbOBxmLBG8uvFUc15X9+9SFemKcQ0WBuISBVkpuiaUB2qblC8UWlHEjdWVoZ8AdhSwmoEgsiXKfopX0CQxaACQ==",
+      "license": "MIT",
+      "dependencies": {
+        "node-addon-api": "^8.0.0"
+      },
+      "engines": {
+        "node": ">=22"
+      }
+    },
+    "node_modules/node-addon-api": {
+      "version": "8.9.2",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-8.9.2.tgz",
+      "integrity": "sha512-VijLXbi3UACN69I0JVXJsX4tjACjNoQDgv2gTF6sx2wWEi8tkSg2eX8p5gSIFi8z2+DL3oHmY6OyKce38SDolg==",
+      "license": "MIT",
+      "engines": {
+        "node": "^18 || ^20 || >= 21"
+      }
+    },
     "node_modules/typescript": {
       "version": "7.0.2",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-7.0.2.tgz",