chore(harness): bump iii-sdk to 0.20.0

[guibeira]

Bump iii-sdk to 0.20.0 + migrate observability to iii-helpers (iii-observability removed) per https://iii.dev/docs/upgrading/from-0-19-x.md. Build, fmt, clippy, tests green (95 tests); surface parity (9 functions + 7 triggers) verified 1:1. No import aliases.

Summary by CodeRabbit

• Chores
  • Updated the harness to align with newer SDK and helper versions.
  • Refreshed client wiring across core flows to improve compatibility with the latest runtime APIs.
  • Adjusted observability and error handling integrations for more consistent behavior.
  • No user-facing features were added, but these updates help keep the system stable and ready for newer platform components.

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Project	Deployment	Actions	Updated (UTC)
workers	Ready	Preview, Comment	Jun 26, 2026 1:21pm
workers-tech-spec	Ready	Preview, Comment	Jun 26, 2026 1:21pm

[github-actions]

skill-check — worker

0 verified, 27 skipped (no docs/).

Layer	Result
structure	✓
vale	✓
ai	✓
render	✓

Four for four. Nicely done.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 92b4cb3a-6cad-414a-90c6-d70f112a7311

📥 Commits

Reviewing files that changed from the base of the PR and between ec53d14 and 90a357e.

⛔ Files ignored due to path filters (1)

• harness/Cargo.lock is excluded by !**/*.lock

📒 Files selected for processing (17)

• harness/Cargo.toml
• harness/src/clients/context.rs
• harness/src/clients/engine.rs
• harness/src/clients/router.rs
• harness/src/clients/session.rs
• harness/src/configuration.rs
• harness/src/deps.rs
• harness/src/discovery.rs
• harness/src/error.rs
• harness/src/events.rs
• harness/src/functions/mod.rs
• harness/src/functions/turn.rs
• harness/src/hooks/mod.rs
• harness/src/hooks/runner.rs
• harness/src/main.rs
• harness/src/state.rs
• harness/src/turn_loop.rs

📝 Walkthrough

Walkthrough

Updates the harness to iii-sdk 0.20.0, replaces III/IIIError usage with IIIClient/iii_sdk::errors::Error, moves TriggerRequest imports to iii_sdk::protocol, swaps observability calls to iii_helpers::observability, and bumps related package and worker dependency pins.

Changes

Harness SDK 0.20 migration

Layer / File(s)	Summary
Dependency and package bumps harness/Cargo.toml, harness/iii.worker.yaml	harness version and iii-* dependency pins move to the newer release set, including iii-sdk, iii-helpers, and the worker crate constraints.
Shared client surface harness/src/deps.rs, harness/src/error.rs, harness/src/main.rs, harness/src/clients/context.rs, harness/src/clients/engine.rs, harness/src/clients/session.rs, harness/src/turn_loop.rs	Shared client containers, error conversion, and the base harness clients switch to IIIClient and protocol-scoped TriggerRequest imports.
Config, discovery, and state harness/src/configuration.rs, harness/src/discovery.rs, harness/src/state.rs	Configuration, discovery, and state accessors switch to IIIClient; config and discovery trigger handlers also use Error.
Trigger wiring and observability harness/src/clients/router.rs, harness/src/events.rs, harness/src/functions/*.rs, harness/src/hooks/*.rs	Router chat, event subscriptions, hook registration, function handlers, and baggage propagation use IIIClient, Error, and iii_helpers::observability paths.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Possibly related PRs

• iii-hq/workers#328: Migrates related worker code from III/IIIError to IIIClient/iii_sdk::errors::Error.
• iii-hq/workers#334: Updates the same harness-side iii-sdk 0.20.0 and iii_helpers::observability import surface.
• iii-hq/workers#343: Applies the same IIIClient and TriggerRequest path migration in adjacent worker code.

Suggested reviewers

• andersonleal
• sergiofilhowz

Poem

A bunny hopped through bindings bright,
With helpers twinkling left and right.
TriggerRequest glints from a protocol twig,
IIIClient thumps in a tidy new jig.
(>_<) 🐇

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title is concise, specific, and accurately reflects the main upgrade in this changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 97.78% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/sdk-0.20-harness

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