Session 2026-05-30: task detail page overhaul

- New TaskDetail replaces /tasks/:id (was v2 at /requests/:id/v2)
- Overview tab: R00 request info, Requested By/Date/Sign Count inline row, Notes, Sign Family, files, amendments
- Revisions tab: R01+ from submissions, newest first, same layout as overview, per-entry Amend button
- Comments tab: single-line input, post on Enter, delete own comments, Supabase task_comments table
- Folder tab: placeholder for file sharing
- Tab badges showing revision/comment counts
- Amend Request modal: drag-drop file zone, popupOverlayStyle/Surface, Save+Cancel buttons
- Request Revision modal for clients on approved/invoiced/paid tasks
- JSZip download-all with progress popup for submission files
- Upload progress popup for Add Task and amend file uploads
- FileAttachment drop zone: 8px radius, transparent bg, label style fix (no all-caps override)
- PageLoader on task detail load
- task_comments migration with RLS policies

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

supabase/.temp/cli-latest

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-v2.100.1

supabase/.temp/gotrue-version

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-v2.188.1

supabase/.temp/pooler-url

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-postgresql://postgres.fqflxxqvennhvoeywrdw@aws-0-us-west-2.pooler.supabase.com:5432/postgres

supabase/.temp/postgres-version

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-17.6.1.084

supabase/.temp/project-ref

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-fqflxxqvennhvoeywrdw

supabase/.temp/rest-version

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-v14.4

supabase/.temp/storage-migration

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-operation-ergonomics

supabase/.temp/storage-version

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-v1.48.20