Search/tail output slimmed; release reader refined

Minor Changes

• dc6ae62: Rework search / tail/latest human output and slim the default --json.

  The human view for search and tail/latest is now a single column-aligned row per release (identity · description · relative age · dimmed rel_…); search adds a cleaned, markdown-stripped excerpt under each hit instead of dumping raw markdown. The piped (non-TTY) TSV path is fixed to one clean row per release.

  --json now returns a lean release shape by default for get / search / tail/latest (id, version, title, summary, excerpt, url, publishedAt, nested source/org, contentChars, contentTokens); pass --full to recover the complete payload (content, contentHash, versionSort, composition, the title* variants, …). Scripts that read dropped fields should add --full.

Patch Changes

• c5ece26: Refine the release reader output: clearer ownership, shorter labels, human dates.
  • search release hits now lead with the owning org as Org/Source (e.g. Axiom/Changelog) so it's clear who ships each result. The org prefix is skipped when the source name already starts with the org name (Railway Changelog stays as-is rather than becoming Railway/Railway Changelog). Feed views (get entity cards, scoped tail) are unchanged — the org is already established there.
  • The release detail cards (get <rel_…> and release get) now show an Org: line so the owning company is named even when the source is generic (e.g. an "API Release Notes" source under Google).
  • get / release get print the publish date as Jul 22, 2024 instead of the raw ISO timestamp. --json still emits ISO publishedAt for machine consumers.
  • Trimmed the AI-attribution labels on the get card to AI summary / AI headline, and dropped the redundant Release heading above the title.