Fix bug where first positional arg was filtered out when --top absent
(topIdx=-1 caused i!==0 to exclude index 0). Add og:title,
og:description, og:type, and twitter card meta tags to island detail
pages so link previews show the island title instead of "Stigmergic".

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- New searchIslands XRPC: query published islands by URL (exact + domain match)
- /search SPA page with URL input, centroid display, matched edge highlighting
- island:search CLI: dedup cache vs published by centroid URL (published wins)
- Refactor records_strata → records_island throughout worker + contrail config
- Header nav: Explore, Search, Connect links
- Edge display: morphism name between nodes (source relates target)

- Remove Docker container, StrataContainer DO, PDS_APP_PASSWORD, and all
server-side PDS write routes (updateRecord, analyze, deriveIsland,
containerHealth, syncContainer, getCarryData)
- Frontend edits now write via OAuth session: putRecord for owner,
createRecord (fork) for non-owner with forkOf provenance
- OAuth callback preserves return page via state + sessionStorage
- Parallelize island:discover: batch 10 DIDs concurrently via
Promise.allSettled, merge resolvePDS+resolveHandle into single
resolveDidDoc call
- Add island:search CLI command for text-based island discovery
- Add synthesis-to-oxa migration script
- Edit chip moved below graph, shown/hidden based on auth state
- Login dialog uses placeholder instead of prefilled handle

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- Frontend app.ts refactored
- island-explore: minor updates
- island-shared: expanded with more utilities
- Worker: additional endpoints and improvements
- Add island-cleanup command
- Update lex.config.js and package.json

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