feat: unify agentic runtime and Product App lifecycle

[GCWing]

Summary

• Make Work locators and session domains authoritative across Core, desktop/CLI adapters, FlowChat, and Product App runtime persistence.
• Move bundled Product Apps toward component-owned agents, bridges, surfaces, scoped tool contracts, and latest-release synchronization; package only the final PPT Live 151.0.10 and Remotion Live 19.0.2 iterations.
• Add the shared Sparo icon package and wire App/Work identity, Product App tool cards, settings, startup, and Work Center presentation through the shared contracts.
• Align test fixtures and assertions with the current locator, workspace, browser-mode, config-catalog, and staging-cleanup contracts; remove three obsolete legacy-contract cases instead of preserving behavior that no longer exists.
• Fix the two frontend CI lint failures while preserving current Work Board and settings-catalog behavior.

Packaging hygiene

Local design documents, design-QA notes, screenshots and caches, generated dist-preview output, the memory/voice preview harnesses, the root 151.0.6/ copy, PPT Live 151.0.4-151.0.9, Remotion Live 19.0.1, and the local .gitignore change are intentionally excluded.

Validation

Passed locally:

• cargo fmt --all --check
• cargo test -p sparo-core --lib (689 passed, 1 ignored)
• cargo check --workspace --exclude sparo-cli
• pnpm run cli:check
• pnpm run type-check:web (brand, i18n, design-system, TypeScript)
• pnpm run lint:web (0 errors)
• pnpm run build:web:unchecked
• Changed Web UI Vitest set (28 files, 146 tests)
• pnpm run check:icons
• Remotion runtime tests (16 passed)
• Final Product App bundle tests (81 passed)
• git diff --check