feat: rename to BitGate and close the drop-in gap

Renames the project and makes it as easy to adopt as BitLogin, which was the
stated bar and which it did not previously meet.

Rename (ADR 0005): @nostr-governance/* -> @bitgate/*, governance-* elements ->
bitgate-*, createGovernanceRuntime -> createBitGate. "Governance" reads as DAO
voting to this audience and named a category rather than a product; BitGate
names the benefit and joins the bit- family that BitVid and BitRoad compose
with. Domain types keep their names — the product is BitGate, the subject
matter is still governance. The migration plan is left as written; this ADR
records the change rather than rewriting history.

Drop-in distribution (ADR 0006): adopting BitGate meant supplying a transport,
authoring a policy, and wiring every element in JavaScript. Now:

- createRelayTransport(urls) — WebSocket transport with reconnection, backoff,
  subscription replay, and cross-relay dedupe
- policy presets (social, commerce, admin-only) addressable by name; the engine
  still carries no thresholds of its own
- <bitgate-provider> — configuration in markup, with descendants finding the
  runtime through a bubbling context event rather than DOM walking, which
  breaks across shadow boundaries
- npm run build:widget — a self-contained dist/bitgate.js

That last one came from running it in a browser rather than from a test. Bare
specifiers resolve in Node and vitest but not in a browser, so the widget
source worked everywhere except a plain static page — the one place it exists
to serve. The bundle is not committed: consumers build from reviewed source.

Also found by running it: the provider's ready event fires during element
upgrade, before a page that defines elements after parsing can attach a
listener, so it now exposes `ready` as a promise too.

Four bugs fixed along the way, three found by new tests and one by the browser:
admin state stayed silent when a roster change altered capabilities but no
denials; the relay transport sent every subscription twice on connect; the
commerce preset computed a meaningless visibility verdict at checkout and could
hide a listing from its own seller; <bitgate-status> threw on an unusable
decision.

759 tests; lint, typecheck, and both builds clean.

package-lock.json

@@ -1,11 +1,11 @@
 {
-  "name": "nostr-governance",
+  "name": "bitgate",
   "version": "0.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "nostr-governance",
+      "name": "bitgate",
       "version": "0.1.0",
       "workspaces": [
         "packages/*",
@@ -13,6 +13,7 @@
       ],
       "devDependencies": {
         "@types/node": "^22.10.0",
+        "esbuild": "^0.28.2",
         "happy-dom": "^20.11.2",
         "typescript": "^5.4.5",
         "vitest": "^3.2.7"
@@ -22,13 +23,41 @@
       }
     },
     "examples/commerce": {
-      "name": "@nostr-governance/example-commerce",
+      "name": "@bitgate/example-commerce",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*",
-        "@nostr-governance/runtime": "*"
+        "@bitgate/core": "*",
+        "@bitgate/runtime": "*"
       }
     },
+    "node_modules/@bitgate/bitvid-compat": {
+      "resolved": "packages/bitvid-compat",
+      "link": true
+    },
+    "node_modules/@bitgate/core": {
+      "resolved": "packages/core",
+      "link": true
+    },
+    "node_modules/@bitgate/example-commerce": {
+      "resolved": "examples/commerce",
+      "link": true
+    },
+    "node_modules/@bitgate/nostr": {
+      "resolved": "packages/nostr",
+      "link": true
+    },
+    "node_modules/@bitgate/runtime": {
+      "resolved": "packages/runtime",
+      "link": true
+    },
+    "node_modules/@bitgate/testing": {
+      "resolved": "packages/testing",
+      "link": true
+    },
+    "node_modules/@bitgate/widget": {
+      "resolved": "packages/widget",
+      "link": true
+    },
     "node_modules/@esbuild/aix-ppc64": {
       "version": "0.28.2",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.28.2.tgz",
@@ -495,34 +524,6 @@
         "node": "^22.20 || ^24.12 || >=25"
       }
     },
-    "node_modules/@nostr-governance/bitvid-compat": {
-      "resolved": "packages/bitvid-compat",
-      "link": true
-    },
-    "node_modules/@nostr-governance/core": {
-      "resolved": "packages/core",
-      "link": true
-    },
-    "node_modules/@nostr-governance/example-commerce": {
-      "resolved": "examples/commerce",
-      "link": true
-    },
-    "node_modules/@nostr-governance/nostr": {
-      "resolved": "packages/nostr",
-      "link": true
-    },
-    "node_modules/@nostr-governance/runtime": {
-      "resolved": "packages/runtime",
-      "link": true
-    },
-    "node_modules/@nostr-governance/testing": {
-      "resolved": "packages/testing",
-      "link": true
-    },
-    "node_modules/@nostr-governance/widget": {
-      "resolved": "packages/widget",
-      "link": true
-    },
     "node_modules/@rollup/rollup-android-arm-eabi": {
       "version": "4.62.4",
       "resolved": "https://registry.npmjs.org/@rollup/rollup-android-arm-eabi/-/rollup-android-arm-eabi-4.62.4.tgz",
@@ -1771,45 +1772,45 @@
       }
     },
     "packages/bitvid-compat": {
-      "name": "@nostr-governance/bitvid-compat",
+      "name": "@bitgate/bitvid-compat",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*",
-        "@nostr-governance/nostr": "*"
+        "@bitgate/core": "*",
+        "@bitgate/nostr": "*"
       }
     },
     "packages/core": {
-      "name": "@nostr-governance/core",
+      "name": "@bitgate/core",
       "version": "0.1.0"
     },
     "packages/nostr": {
-      "name": "@nostr-governance/nostr",
+      "name": "@bitgate/nostr",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*"
+        "@bitgate/core": "*"
       }
     },
     "packages/runtime": {
-      "name": "@nostr-governance/runtime",
+      "name": "@bitgate/runtime",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*",
-        "@nostr-governance/nostr": "*"
+        "@bitgate/core": "*",
+        "@bitgate/nostr": "*"
       }
     },
     "packages/testing": {
-      "name": "@nostr-governance/testing",
+      "name": "@bitgate/testing",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*"
+        "@bitgate/core": "*"
       }
     },
     "packages/widget": {
-      "name": "@nostr-governance/widget",
+      "name": "@bitgate/widget",
       "version": "0.1.0",
       "dependencies": {
-        "@nostr-governance/core": "*",
-        "@nostr-governance/runtime": "*"
+        "@bitgate/core": "*",
+        "@bitgate/runtime": "*"
       }
     }
   }