feat: bump engine to v2.29.0

[endstate-release-bot]

Bumps the bundled engine from v2.28.0 to v2.29.0.

Engine commits since v2.28.0

• docs(openspec): propose durable app identity for presence detection (fix: bump engine to v2.27.6 so capture survives stale duplicate modules #196)
• fix(capture): write the app display name under the key readers actually bind (fix(installer): replace the engine module catalog on upgrade instead of merging into it #198)
• fix(openspec): repair the two changes failing validation on main (chore(main): release gui 3.7.1 #197)
• feat(capture): give capture bundles a first-class .endstate extension (fix(import): accept the readable payload roots engine 2.27.5 writes #200)
• docs(openspec): base app identity on the ARP registry, not display names (fix(import): show the real reason instead of "Please try again" #201)
• fix(capture): match installed apps by durable ARP identity (fix(setup): lead compatibility cards with their reason, and stop re-explaining a delete #202)
• fix(capture): stabilize winget identity enumeration (chore(main): release gui 3.7.3 #203)
• feat(modules): add Elgato Stream Deck and Wave Link
• chore(main): release 2.29.0 (chore(main): release gui 3.7.2 #199)