Reduce internal-only labeling noise in source comments (#355)

This pass rewrites comment-only ANT-ONLY markers to neutral internal-only
language across the source tree without changing runtime strings, flags,
commands, or protocol identifiers. The goal is to lower obvious internal
prose leakage while keeping the diff mechanically safe and easy to review.

Constraint: Phase B is limited to comments/prose only; runtime strings and user-facing labels remain deferred
Rejected: Broad search-and-replace across strings and command descriptions | too risky for a prose-only pass
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Remaining ANT-ONLY hits are mostly runtime/user-facing strings and should be handled separately from comment cleanup
Tested: bun run build
Tested: bun run smoke
Tested: bun run verify:privacy
Tested: bun run test:provider
Tested: bun run test:provider-recommendation
Not-tested: Full repo typecheck (upstream baseline remains noisy)

Co-authored-by: anandh8x <test@example.com>

src/bridge/bridgeConfig.ts

@@ -1,11 +1,11 @@
 /**
- * Shared bridge auth/URL resolution. Consolidates the ant-only
+ * Shared bridge auth/URL resolution. Consolidates the internal-only
  * CLAUDE_BRIDGE_* dev overrides that were previously copy-pasted across
  * a dozen files — inboundAttachments, BriefTool/upload, bridgeMain,
  * initReplBridge, remoteBridgeCore, daemon workers, /rename,
  * /remote-control.
  *
- * Two layers: *Override() returns the ant-only env var (or undefined);
+ * Two layers: *Override() returns the internal-only env var (or undefined);
  * the non-Override versions fall through to the real OAuth store/config.
  * Callers that compose with a different auth source (e.g. daemon workers
  * using IPC auth) use the Override getters directly.