feat: post-render and Studio feedback collection via PostHog surveys (#1101)

* feat(cli): prompt for render satisfaction after successful renders

* feat: add text feedback, doctor context, and Studio render feedback UI

* feat(studio): replace render feedback with session-based Studio experience bar

Move the feedback prompt out of RenderQueueItem (where it triggered every
5th render) into a standalone StudioFeedbackBar mounted at the bottom of
the preview area. The new bar is session-gated (shows after the 5th studio
session), auto-dismisses after 20s, and respects a 30-day cooldown once
dismissed or submitted. Renames telemetry to trackStudioFeedback with a
"studio_experience" survey ID to reflect the broader scope.

* feat(studio): attach browser doctor summary to feedback events

* fix(studio): use recurring interval for feedback instead of one-time cooldown

* fix(cli): skip feedback prompt when an agent runtime is detected

* feat(cli): add hyperframes feedback command and agent render hint

- New `hyperframes feedback --rating <1-5> --comment "..."` command
  for submitting anonymous render satisfaction feedback via telemetry.
- When an AI agent runtime is detected after a render, print a dimmed
  hint to stdout so the agent can optionally call the command instead
  of silently skipping the readline prompt.
- Export getDoctorSummary from telemetry/feedback.ts to share the
  system-info collector between the interactive prompt and the CLI command.
- Register the command in cli.ts and help.ts under Settings.

* fix(studio): align feedback interval to every 15 sessions

* fix: show CLI feedback on first render, Studio every 10 sessions

* feat: add env flags to disable feedback prompts

* feat: env flags to configure feedback prompt frequency

* fix: address review — agent hint reachability, cadence gate, session debounce, deprecated API

packages/cli/src/telemetry/config.ts

@@ -19,6 +19,10 @@ export interface HyperframesConfig {
   telemetryNoticeShown: boolean;
   /** Total CLI command invocations (for engagement prompts) */
   commandCount: number;
+  /** Total successful renders (for feedback prompt gating) */
+  renderSuccessCount: number;
+  /** The renderSuccessCount at which feedback was last shown */
+  lastFeedbackPromptAt: number;
   /** ISO timestamp of the last npm registry version check */
   lastUpdateCheck?: string;
   /** Latest version found on npm */
@@ -58,6 +62,8 @@ const DEFAULT_CONFIG: HyperframesConfig = {
   anonymousId: "",
   telemetryNoticeShown: false,
   commandCount: 0,
+  renderSuccessCount: 0,
+  lastFeedbackPromptAt: 0,
 };
 
 let cachedConfig: HyperframesConfig | null = null;
@@ -84,6 +90,8 @@ export function readConfig(): HyperframesConfig {
       anonymousId: parsed.anonymousId || randomUUID(),
       telemetryNoticeShown: parsed.telemetryNoticeShown ?? DEFAULT_CONFIG.telemetryNoticeShown,
       commandCount: parsed.commandCount ?? DEFAULT_CONFIG.commandCount,
+      renderSuccessCount: parsed.renderSuccessCount ?? DEFAULT_CONFIG.renderSuccessCount,
+      lastFeedbackPromptAt: parsed.lastFeedbackPromptAt ?? DEFAULT_CONFIG.lastFeedbackPromptAt,
       lastUpdateCheck: parsed.lastUpdateCheck,
       latestVersion: parsed.latestVersion,
       pendingUpdate: parsed.pendingUpdate,