fix(tui): title-case callout titles, add phone-ready notice on deploy start

[UtkarshBhardwaj007]

What

• All bordered callout titles now use Title Case: "Moddable Setup Needed", "Check Your Phone", "README Will Not Be Uploaded", "About This Command", "Owned by a Development Account", "Signing Failed", "Decentralize Failed". Section titles, row labels, and hints keep the deliberate lowercase aesthetic; only bordered Callout titles changed.
• Phone-signed deploys show a "Keep Your Phone Ready" callout the moment Enter is pressed on the confirm screen, so users have the mobile app ready before the first approval prompt:

╭──────────────────────────────────────────────────────────╮
│ Keep Your Phone Ready                                    │
│ This deploy will ask you to approve transactions in your │
│ mobile app.                                              │
╰──────────────────────────────────────────────────────────╯

Behaviour notes

• The notice renders only when the resolved signer mode is phone. Dev-mode deploys (which can still need 0-1 taps) intentionally don't show it; the existing per-step "Check Your Phone" callout still covers any actual tap.
• It clears when the first sign-request arrives (the per-step approval callout takes over) and on finish/error, since RunningStage stays mounted through the done/error stages.
• The repeated setShowPhoneNotice(false) on later sign-requests is a deliberate no-op: React bails out of re-rendering on same-value state sets, so don't "optimize" it into a guard.

Verification

• pnpm format:check clean
• pnpm lint:license clean (198 files)
• pnpm test 643/643 passed
• tsc --noEmit error count unchanged at the 13-error baseline
• Changeset included (patch)

[github-actions]

Dev build ready — try this branch:

curl -fsSL https://raw.githubusercontent.com/paritytech/playground-cli/main/install.sh | VERSION=dev/fix/callout-title-case-phone-ready-notice bash

[github-actions]

E2E Test Pass · ✅ PASS

Tag: e2e-ci-pr · Branch: fix/callout-title-case-phone-ready-notice · Commit: 488aef7 · Run logs

Cell	Result	Time
pr-install	✅ PASS	0m51s
pr-init-session	✅ PASS	1m50s
pr-deploy-foundry	✅ PASS	0m43s
pr-preflight	✅ PASS	2m18s
pr-deploy-cdm	✅ PASS	4m10s
pr-mod	✅ PASS	1m27s
pr-deploy-frontend	✅ PASS	8m12s
${{ matrix.cell }}	⏭️ SKIP	0m00s
${{ matrix.cell }}	⏭️ SKIP	0m00s

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