Advance the canonical Echo producer pin

[flyingrobots]

Outcome

Advances the canonical Echo coordinate from c354d531679861fb7bbd52ab7b7703807909ab86 to 490134c0753a3df6a74da366cc71c1248764dc5a. Edict remains pinned at df80f92ad6242c6da31a64224666fd37aa43b0d0.

The full witness gate reproduced every vendored Edict lawpack and Echo provider artifact byte-for-byte, so no generated or application artifact changed. The only repository diff is the exact Echo coordinate.

Validation

• ./tests/producer-lock.sh
• ./tests/runtime.sh: golden, deterministic rerun, typed refusals, boundary, fixed-seed, and stress cases passed
• ./tests/effect-runtime.sh: ordered observation, durability, replay, refusal, boundary, fixed-seed, and stress cases passed
• ./tests/patch-runtime.sh: ordered patch, retry, replay, reconciliation, refusal, boundary, fixed-seed, and stress cases passed
• ./tests/build-cleans-output.sh
• ./tests/writer-epoch-assertions.sh: all cases passed
• cargo fmt for both generated hosts
• cargo clippy -D warnings for both generated hosts
• git diff --check

Both producer worktrees were exact and clean at the named commits.

Closes #33

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: af14226f-e187-465c-87ac-2766f759ead1

📥 Commits

Reviewing files that changed from the base of the PR and between 1ad3f6d and 8db8961.

📒 Files selected for processing (1)

• producers.lock.json

📜 Recent review details

⏰ Context from checks skipped due to timeout. (1)

• GitHub Check: Witness gate

🔇 Additional comments (1)

producers.lock.json (1)

9-9: LGTM!

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Summary by CodeRabbit

• Chores
  • Updated the locked version of the flyingrobots/echo dependency.

Walkthrough

The PR updates the locked flyingrobots/echo dependency from commit c354d531679861fb7bbd52ab7b7703807909ab86 to 490134c0753a3df6a74da366cc71c1248764dc5a. No public entities change.

Changes

Producer pin update

Layer / File(s)	Summary
Update Echo lock pin producers.lock.json	The locked Echo commit changes to 490134c0753a3df6a74da366cc71c1248764dc5a.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 8db89

This change advances the canonical Echo producer pin in the lock file without changing generated or application artifacts, and all supplied validation checks pass. No actionable merge-blocking risk remains beyond normal checks and review.

Poem

One hash leaves the chain,
A newer Echo takes its place,
The lock stays precise.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the primary change: advancing the canonical Echo producer pin.
Description check	✅ Passed	The description directly explains the Echo pin update, retained Edict pin, validation results, and linked issue.
Linked Issues check	✅ Passed	The PR satisfies the coding objectives in [#33], including the exact Echo pin, witness evidence, clean checkouts, and no semantic changes.
Out of Scope Changes check	✅ Passed	The one-line lock-file change is fully aligned with [#33], and no unrelated code or artifact changes are reported.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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