fix(voice-pipeline): resolve 2 lint errors unblocking CI

- TranscriptDedupe: drop unnecessary escape on `[` inside character
  class (no-useless-escape). Character behavior unchanged.
- DeepgramStreamingSTT: drop no-op try/catch that just rethrew
  (no-useless-catch). Behavior unchanged — a naked throw from the
  async function propagates identically.

Lint went from 2 errors to 0 errors (warnings unchanged at 206).
Pre-existing errors, not introduced by the forge-telemetry commits,
but CI has been red since their authoring so Release kept passing
while CI didn't. Release + CI now both green.

Voice-pipeline targeted suite: 242 tests pass.

Author: jddunn

src/voice-pipeline/TranscriptDedupe.ts

@@ -28,7 +28,7 @@ export interface DedupeResult {
   against?: { provider: string; text: string };
 }
 
-const PUNCT_RE = /[.,!?;:"'()\[\]{}]/g;
+const PUNCT_RE = /[.,!?;:"'()[\]{}]/g;
 const WS_RE = /\s+/g;
 
 function normalize(text: string): string {

src/voice-pipeline/providers/DeepgramStreamingSTT.ts

@@ -53,15 +53,11 @@ export type VoiceHealthProbe = (
 
 async function defaultDeepgramProbe(apiKey: string) {
   const start = Date.now();
-  try {
-    const res = await fetch('https://api.deepgram.com/v1/projects', {
-      headers: { Authorization: `Token ${apiKey}` },
-      signal: AbortSignal.timeout(1000),
-    });
-    return { ok: res.ok, status: res.status, latencyMs: Date.now() - start };
-  } catch (err) {
-    throw err;
-  }
+  const res = await fetch('https://api.deepgram.com/v1/projects', {
+    headers: { Authorization: `Token ${apiKey}` },
+    signal: AbortSignal.timeout(1000),
+  });
+  return { ok: res.ok, status: res.status, latencyMs: Date.now() - start };
 }
 
 // ---------------------------------------------------------------------------