feat: export Pi model catalog

[jaivial]

Summary

• add a read-only codex-shim export-pi command for Pi-native model discovery
• preserve ChatGPT and Cursor passthrough models plus BYOK API routing metadata
• document a non-destructive merge into ~/.pi/agent/models.json

Verification

• python3 -m compileall -q codex_shim
• exported IDs diff-clean against live GET /v1/models (43/43)
• installed locally into Pi with existing providers preserved; pi --list-models resolves the new provider

[jaivial]

PR Review: #54 — feat: export Pi model catalog

Author: @jaivial · Base: main ← jaivial:pi-model-catalog
Files: 3 changed · +168 / −3 · 1 commit(s)

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Short Summary

Adds a read-only exporter that turns the shim's live model catalog into Pi's native models.json provider shape. It preserves per-model transport differences and documents a non-destructive merge into an existing Pi configuration.

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Critical Issues

None.

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Important Blockers

None.

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Medium Blockers

None.

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Non-Blocker Nits

None.

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Verdict

Approve

Compilation is clean, exported IDs match the shim's advertised /v1/models set, active passthroughs/router handling are included, and duplicate model IDs are suppressed.

[jaivial]

PR Review: #54 — feat: export Pi model catalog

Author: @jaivial · Base: main ← jaivial:pi-model-catalog
Files: 3 changed · +143 / −3 · 1 commit(s)

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Short Summary

Adds a read-only exporter for Pi's native model-provider catalog while preserving OpenAI Chat, OpenAI Responses, and Anthropic Messages routing. It documents a merge that leaves unrelated Pi providers untouched.

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Critical Issues

None.

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Important Blockers

None.

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Medium Blockers

None.

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Non-Blocker Nits

None.

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Verdict

Approve

Compilation is clean and the exported unique-ID set matches the running shim's /v1/models catalog; duplicate handling, per-model API routing, token limits, input modality metadata, and documentation are all covered.