refactor(core): remove legacy plebbit terminology

.codex/skills/deslop/SKILL.md

@@ -55,13 +55,13 @@ AI adds try/catch blocks and null guards everywhere, even on trusted codepaths.
 ```typescript
 // ❌ Slop — bitsocial-react-hooks already handles errors internally
 try {
-  const { feed } = useFeed({ subplebbitAddresses });
+  const { feed } = useFeed({ communities });
 } catch (error) {
   console.error('Failed to fetch feed:', error);
 }
 
 // ✅ Clean — just use the hook directly
-const { feed } = useFeed({ subplebbitAddresses });
+const { feed } = useFeed({ communities });
 ```
 
 ### `as any` casts

.codex/skills/profile-browsing/SKILL.md

@@ -158,5 +158,5 @@ playwright-cli -s=prof-3 close 2>/dev/null
 - **Per-route collection**: Data resets on each `goto` — the profiler collects before navigating away.
 - **addInitScript persistence**: Instrumentation re-injects automatically in each new document.
 - **Tracing**: Each subagent produces a `trace.zip` viewable in [Trace Viewer](https://trace.playwright.dev).
-- **Board codes**: `biz`, `pol`, `g`, `a`, `v`, etc. map to subplebbit addresses via the directory.
+- **Board codes**: `biz`, `pol`, `g`, `a`, `v`, etc. map to community addresses via the directory.
 - **Without react-scan**: If `__getReactScanReport` returns null, the profiler falls back to commit counts + render bursts (still useful, just no component names).

.codex/skills/you-might-not-need-an-effect/SKILL.md

@@ -134,7 +134,7 @@ if (typeof window !== 'undefined') {
 
 | useEffect pattern | Replace with |
 |-------------------|-------------|
-| Fetch data | `useComment`, `useFeed`, `useSubplebbit`, etc. from bitsocial-react-hooks |
+| Fetch data | `useComment`, `useFeed`, `useCommunity`, etc. from bitsocial-react-hooks |
 | Sync shared state | Zustand store in `src/stores/` |
 | Derive values from state | Calculate during render |
 | Boolean loading/error flags | `state` field from bitsocial-react-hooks, or state machine in Zustand |