fix(export): prevent static render hangs

[xjdr-noumena]

Summary

Fixes the /export hang portion of #49 and updates /feedback to target the real Noumena collector route.

• fixes the headless Ink/static-render lifecycle race that caused /export to hang before writing a file or showing the export dialog
• fixes the non-TTY renderer import path exposed by the static-render regression (cellAt)
• lazy-loads ExportDialog so /export <filename> does not import dialog/model UI modules
• changes /feedback submission from the legacy /api/claude_cli_feedback path to /api/ncode_feedback
• keeps missing collector routes fail-closed in the client; GitHub issue drafting remains the post-submit/done flow, not a substitute for collector persistence
• hardens the existing toolPromptRouting model mock so later tests still see unmocked model exports
• adds regressions for static render completion, /export <filename>, and feedback collector request shape/fail-closed behavior

Backend note: the matching internal api/ change exposes authenticated POST /api/ncode_feedback and the legacy POST /api/claude_cli_feedback alias through APIFE and stores feedback in the existing ncode_logs Scribe category before returning feedback_id.

Validation

Focused #49 regressions:

/home/xjdr/.bun/bin/bun test \
  src/utils/staticRender.test.tsx \
  src/commands/export/export.test.tsx \
  src/components/Feedback.submit.test.ts

Result: 4 pass, 0 fail.

Model-mock ordering regression slice:

/home/xjdr/.bun/bin/bun test \
  src/tools/toolPromptRouting.test.ts \
  src/commands/export/export.test.tsx

Result: 7 pass, 0 fail.

Contracts:

PATH="$HOME/.bun/bin:$PATH" timeout 120s /home/xjdr/.bun/bin/bun run test:contracts

Result from previous revision of this PR: 242 pass, 0 fail. After the latest feedback-route correction, focused regressions above passed; full contracts should rerun in CI/package smoke.

Package smoke:

PATH="$HOME/.bun/bin:$PATH" timeout 180s /home/xjdr/.bun/bin/bun run test:package-smoke

Result from previous revision of this PR: passed. Security audit OK; native probe OK with documented sharp-fallback image mode.

Diff check:

git diff --check

Result from previous revision of this PR: passed.