Replace local disk blobstore with S3-compatible storage configuration.
This allows blobs to be stored in OVH Object Storage while keeping
record data (CAR files, SQLite) on local NVMe.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Adds optional sources field to social.coves.embed.external lexicon
to support aggregator megathreads that combine multiple news sources.

Changes:
- Add #source definition with uri, title, domain, and optional sourcePost
- Add sources array (max 50) to #external for aggregated links
- Add maxLength constraints to domain (253) and provider (100) fields
- Update descriptions to clarify primary vs aggregated content

This enables LLM aggregators to create megathread posts that reference
multiple source articles, with optional strongRef to existing Coves
posts for future feed deprioritization.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Changed camelCase NSIDs to lowercase to comply with atProto Lexicon
specification which requires NSIDs to use only lowercase letters:
- social.coves.actor.getProfile → social.coves.actor.getprofile
- social.coves.actor.updateProfile → social.coves.actor.updateprofile

Updated all code references including routes, tests, and documentation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

- Apply gofumpt formatting with extra-rules across all packages
- Fix mock interface signatures to match updated Service/Repository interfaces
- Fix ineffassign bugs in community_repo.go (sortColumn/sortOrder)
- Fix unchecked error returns in production code (register.go)
- Fix unchecked error returns in test files (defer closures)
- Optimize struct field alignment per govet fieldalignment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Standardize import ordering and formatting using gofumpt.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Add configurable allowlist to restrict who can create communities during alpha.
Self-hosters can set their own DID in the env var.

- Add allowedCommunityCreators field to CreateHandler
- Load comma-separated DIDs from COMMUNITY_CREATORS env var
- Return 403 CommunityCreationRestricted for non-allowed users
- Empty/unset env var allows all authenticated users
- Filter empty strings from allowlist defensively
- Add comprehensive unit tests for allowlist behavior

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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