Audit non-Claude hook and runtime parity for Codex, Copilot, and related providers

[julianknutsen]

Problem

The upstream audit still calls out remaining non-Claude hook and runtime parity gaps, especially around Codex and Copilot behavior.

We need a concrete parity audit against current Gas City behavior that produces a maintainer-useful punch list instead of stale assumptions.

Scope

• verify hook installation behavior for Codex, Copilot, and other non-Claude providers Gastown users are likely to try first
• verify startup, gc prime --hook flow, instruction-file handling, and launch-time ergonomics
• distinguish confirmed gaps from already-landed behavior so maintainers know what still needs work

Acceptance Criteria

• the audit identifies real remaining gaps, not stale assumptions
• the output points at concrete repo locations or follow-up fixes
• the results are specific enough that maintainers can convert them into bugs or patches quickly

Related

• Spawned opencode session falls back to Claude provider instead of respecting user's configured provider #271
• gc init with OpenCode creates/runs sessions, but gc sling opencode <bead> never picks up routed work #304
• bug: OpenCode provider PromptMode "arg" crashes all non-director agent sessions #89

wasteland:
  type: bug
  priority: 2
  effort: medium

[julianknutsen]

Wasteland sync — tracked as w-7ed35a727f

Field	Value
Wanted ID	w-7ed35a727f
Status	completed + stamped
Upstream	hop/wl-commons
Contributor	rome
Evidence	#639 (merged 2026-04-13)
Quality / Reliability	5 / 5
Severity	leaf
Skills	research, dev tools

"Thanks for identifying the gaps in our provider matrix!"

Last updated by Wendy patrol — 2026-04-13T09:02Z

[csells]

support tiers:
S: claude, codex
A: gemini
B: opencode, the rest