giles 2ffdd6f078 host: Phase 2 — middleware (auth+ACL+error) + guarded POST /feed, 43/43 ...

Composable handler->handler layers over Dream's primitives, with auth and
permission POLICY injected so the layer is policy-free and testable:

- middleware.sx: host/wrap-errors (JSON 500 via dream-catch-with),
  host/require-auth (bearer->principal via dream-bearer-token, JSON 401,
  injected token resolver), host/require-permission (lib/acl acl/permit? gate,
  JSON 403, injected resource extractor), host/pipeline (first = outermost)
- feed.sx: POST /feed via host/feed-write-routes — auth ∘ ACL(post,feed) ∘
  wrap-errors over host/feed-create (parse JSON body -> feed/post -> 201;
  non-object -> 400). Created activity reads back via GET /feed.
- middleware suite (9) + feed write tests (6 new); conformance preloads now
  include the Datalog engine + ACL subsystem + Dream auth/error.

ACL works with string atoms (no symbol coercion). Mute/prefs layer and sxtp.sx
deferred to the next tick.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-07 19:48:18 +00:00

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