refactor(approvals): persist title+options on channel/sender approval tables

getAskQuestionRender used to hardcode the card title and option labels
for pending_channel_approvals and pending_sender_approvals in the
DB-access layer, duplicating wording that already lived in the approval
modules. That caused a visible drift between the initial card title —
picked per event in channel-approval.ts ("📣 Bot mentioned in new chat"
vs. "💬 New direct message") — and the post-click render, which
always showed the constant "📣 Channel registration".

Mirror the pattern already used by pending_approvals: add title /
options_json columns on both pending_*_approvals tables via migration
013, have the approval modules write them at creation time, and let
getAskQuestionRender just SELECT.

- Migration 013 ALTERs the two tables to add title + options_json.
- PendingChannelApproval / PendingSenderApproval types and their
  create functions grow the two fields.
- channel-approval.ts / sender-approval.ts normalize options once
  and pass both title and options_json into the insert.
- getAskQuestionRender drops the hardcoded render objects and reads
  the stored values.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/modules/permissions/db/pending-channel-approvals.ts

@@ -17,6 +17,10 @@ export interface PendingChannelApproval {
   original_message: string;
   approver_user_id: string;
   created_at: string;
+  /** Card title shown at creation and re-used by getAskQuestionRender on click. */
+  title: string;
+  /** Normalized options (JSON-encoded NormalizedOption[]) — same shape persisted on pending_approvals. */
+  options_json: string;
 }
 
 export function createPendingChannelApproval(row: PendingChannelApproval): void {
@@ -24,11 +28,11 @@ export function createPendingChannelApproval(row: PendingChannelApproval): void
     .prepare(
       `INSERT INTO pending_channel_approvals (
          messaging_group_id, agent_group_id, original_message,
-         approver_user_id, created_at
+         approver_user_id, created_at, title, options_json
        )
        VALUES (
          @messaging_group_id, @agent_group_id, @original_message,
-         @approver_user_id, @created_at
+         @approver_user_id, @created_at, @title, @options_json
        )`,
     )
     .run(row);