feat: extract @uncaged/pulse-local package, remove createStore from core exports

Phase 2 of PulseDatabase abstraction:
- Create @uncaged/pulse-local with bun:sqlite implementation
- Core @uncaged/pulse now exports types only for store (no createStore/createScopedStore)
- Update pulse-workflows, upulse to import factories from @uncaged/pulse-local
- All tests passing (267 core, 39 pulse-workflows)

bun.lock

@@ -48,6 +48,17 @@
         "@uncaged/pulse": ">=0.1.0",
       },
     },
+    "packages/pulse-local": {
+      "name": "@uncaged/pulse-local",
+      "version": "0.1.0",
+      "dependencies": {
+        "@uncaged/pulse": "workspace:*",
+      },
+      "devDependencies": {
+        "bun-types": "latest",
+        "typescript": "^6.0.2",
+      },
+    },
     "packages/pulse-openclaw": {
       "name": "@uncaged/pulse-openclaw",
       "version": "0.1.0",
@@ -66,6 +77,7 @@
       "version": "0.1.0",
       "dependencies": {
         "@uncaged/pulse": "workspace:*",
+        "@uncaged/pulse-local": "workspace:*",
       },
       "devDependencies": {
         "bun-types": "^1.3.12",
@@ -90,6 +102,7 @@
       },
       "dependencies": {
         "@uncaged/pulse": "workspace:*",
+        "@uncaged/pulse-local": "workspace:*",
         "commander": "^12.0.0",
       },
       "devDependencies": {
@@ -264,6 +277,8 @@
 
     "@uncaged/pulse-hermes": ["@uncaged/pulse-hermes@workspace:packages/pulse-hermes"],
 
+    "@uncaged/pulse-local": ["@uncaged/pulse-local@workspace:packages/pulse-local"],
+
     "@uncaged/pulse-openclaw": ["@uncaged/pulse-openclaw@workspace:packages/pulse-openclaw"],
 
     "@uncaged/pulseflare": ["@uncaged/pulseflare@workspace:packages/pulseflare"],