Add ByteDance models to goose-proxy MODEL_MAP

[BryanChasko]

Agent Task

Agent: myrren-openrouter-mapper
Depends on: none
Branch: feat/bytedance-model-map
Source: specs/marvel-snap-pipeline/tasks.md

Acceptance Criteria

• Add bytedance-vision alias mapping to bytedance/ui-tars-1.5-7b in goose-proxy.py
• Add bytedance-reason alias mapping to bytedance/seed-oss-36b-instruct in goose-proxy.py
• Verify routing via proxy health check

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Generated from specs/marvel-snap-pipeline/tasks.md by generate-task-issues.py

[heraldstack]

Issue #23 progress update:

I audited the live alias contract against the current gander runtime. The canonical mapping in goosecli-heraldstack-gander/goose-proxy.py is currently:

• bytedance-vision -> bytedance-seed/seed-2.0-mini
• bytedance-reason -> bytedance-seed/seed-2.0-lite

I patched the Marvel Snap repo so prompts and specs stop teaching stale provider IDs as source of truth:

• README now uses alias-first wording and points to the gander proxy as canonical
• vendor/classification/reconstruction/design/tasks docs now refer to proxy-resolved aliases instead of stale hardcoded UI-TARS / Seed OSS assumptions where they were misleading

Recipes remain alias-based, which is the right shape. The remaining work for #23 is deciding whether the runtime mapping should stay on the current Seed 2.0 targets or be changed in the gander proxy to match the earlier UI-TARS / Seed OSS plan.