Support bounded metadata reconciliation apply

[chubes4]

Summary

• Preserves page-scoped summary, pagination, and evidence when reconcile-metadata --apply --limit --offset applies a bounded page directly.
• Marks direct apply output with direct_apply and evidence apply_source so operators can distinguish it from reviewed plan-file applies.
• Adds a CLI next-page hint for bounded apply output.

Closes #343.

Testing

• php tests/smoke-worktree-metadata-reconcile.php
• php -l inc/Workspace/Workspace.php
• php -l inc/Cli/Commands/WorkspaceCommand.php
• php -l tests/smoke-worktree-metadata-reconcile.php
• git diff --check

AI assistance

• AI assistance: Yes
• Tool(s): OpenCode (GPT-5.5)
• Used for: Drafted and implemented the bounded direct apply fix and smoke coverage; Chris retains review and merge responsibility.