fix(desktop): restore startup with legacy MiniApp workspace history

[bobleer]

Summary

Fix desktop startup exiting immediately when an existing current-format workspace catalog includes a MiniApp-owned directory in recent history. Accept those records and normalize only recent-project history after restoring the current workspace, preserving workspace IDs, opened/current references, and remote records. Show AppState initialization failures and the startup log path through the existing fatal-startup error reporter.

Type and Areas

Type: regression fix

Areas: workspace persistence, shared workspace startup, desktop/Tauri

Motivation / Impact

pnpm run desktop:dev compiled successfully but exited after OpenBitFun Desktop Starting. The actual error was only in early-startup.log: a MiniApp workspace in recent_workspaces caused the entire catalog to be rejected. Existing catalogs now load without resetting user data or requiring manual migration.

Verification

• Passed: cargo test -p openbitfun-services-core --no-default-features --features workspace-persistence --lib workspace_persistence::tests (4 tests).
• Passed: cargo test --locked -p openbitfun-core --no-default-features --features agent-runtime,git --lib legacy_miniapp_history (1 test).
• Passed: cargo build -p openbitfun-desktop.
• Passed: pnpm run fmt:rs and git diff --check.
• Manual macOS: launched pnpm run desktop:dev against the existing catalog and verified the main UI opened. All 25 workspace records and current/opened selections were retained; only the MiniApp entry was removed from recent-project history.
• Remote scope: unit tests cover offline remote records, including a remote path matching the local MiniApp root. No end-to-end remote workspace, remote control, Peer Device Mode, or Detached Dispatch validation was performed.

Reviewer Notes

AI-assisted implementation; focused tests, desktop build, and local startup verification completed. Persistence schema/version and opaque workspace identities remain unchanged. Local workspace data and diagnostic logs are not included in this PR.

Checklist

• This PR is focused and does not include secrets, temporary prompts, generated scratch files, or unrelated artifacts.
• Relevant verification is recorded above, or skipped checks are explained.
• User-facing strings, docs, and locales are updated where applicable.