Recap: readable transcript + topic sections + meeting extras (gateway LLM)

New 'Recap' phase — turns speakers.json into a human-readable recap, leveraging
recap-relay's proven logic/prompts but calling the Spark gateway's OpenAI-compatible
/v1/chat/completions directly (same host/TLS as label-merge; Qwen3-35B). We start
from already-named speakers (label-merge), so recap-relay's speaker clustering +
name-inference are skipped entirely.

- GatewayLLMClient: /v1/chat/completions (JSON mode), model discovery via
  /api/endpoints, TLS-skip reuse, 503 retry, sequential.
- RecapAnalyzer: speakers.json → numbered [N] (MM:SS) Name: text transcript →
  time-windowed analyze (single window for short calls, 18min/2min overlap for long)
  → stitch/dedup topic sections → meeting extras (TLDR/decisions/action_items/
  open_questions/key_quotes). Defensive JSON parsing of LLM output.
- RecapRenderer: writes transcript.md + a self-contained dark-theme recap.html
  (topic sections w/ collapsible transcripts, extras panels, speaker color chips,
  full timestamped speaker-attributed transcript, print styles).
- SessionController.buildRecap: best-effort after speakers.json (gated by
  settings.recapEnabled); surfaces recapURL → menu 'Open recap'. Skips silently if
  the gateway has no LLM. Settings toggle added.

Validated END-TO-END on the real Meet session against the live gateway: dual-channel
transcription → 3 topic sections + accurate TLDR + key quotes; 'Go Bitcoin'
correctly attributed to the remote speaker. 46/46 XCTest (10 new).

Ten31Transcripts/Settings/AppSettings.swift

@@ -47,6 +47,12 @@ final class AppSettings: ObservableObject {
         didSet { defaults.set(autoSendOnStop, forKey: Keys.autoSend) }
     }
 
+    /// After transcription, build the readable recap (topic sections + meeting
+    /// extras) via the gateway LLM and write transcript.md / recap.html. Best-effort.
+    @Published var recapEnabled: Bool {
+        didSet { defaults.set(recapEnabled, forKey: Keys.recapEnabled) }
+    }
+
     /// Output folder as a resolved file URL (expands a leading `~`).
     var outputFolderURL: URL {
         URL(fileURLWithPath: (outputFolderPath as NSString).expandingTildeInPath,
@@ -74,6 +80,7 @@ final class AppSettings: ObservableObject {
         self.autoRecordOnDetection = defaults.object(forKey: Keys.autoRecord) as? Bool ?? true
         self.selfName = defaults.string(forKey: Keys.selfName) ?? "Me"
         self.autoSendOnStop = defaults.object(forKey: Keys.autoSend) as? Bool ?? false
+        self.recapEnabled = defaults.object(forKey: Keys.recapEnabled) as? Bool ?? true
     }
 
     private enum Keys {
@@ -84,5 +91,6 @@ final class AppSettings: ObservableObject {
         static let autoRecord = "autoRecordOnDetection"
         static let selfName = "selfName"
         static let autoSend = "autoSendOnStop"
+        static let recapEnabled = "recapEnabled"
     }
 }