Release v0.11.3

[jonbaldie]

Summary

Patch release v0.11.3. Internal refactor of request payload ingestion; no intended change to HTTP behaviour.

Included changes

• Extract payload ingestion and validation (streaming size limit, UTF-8 decoding, JSON parsing, nesting depth, number precision) from the HTTP handler into src/payload.ts, with direct unit tests (Architecture: Extract Payload ingestion and validation module from HTTP handler #139, refactor: extract payload ingestion and validation module from HTTP handler (#139) #140).
• Exploratory testing pass for the payload ingestion refactor and protocol invariants (docs: exploratory testing report for payload ingestion refactor (2026-09-26) #141, docs only).

Verification

• deno test --allow-read --allow-write --allow-net --allow-env --allow-run passed (578 passed, 0 failed).
• npm run quality:production passed.
• Compiled with Deno 2.7.6 and the CI permission set.
• Compiled binary smoke passed: health check, unauthenticated access rejection (401), malformed JSON rejection (400), and authenticated enqueue/dequeue round-trip preserving "bar" and 0.

Full Changelog: v0.11.2...v0.11.3

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