fix(cli): keep [1m]/[500k] on Claude virtual ANTHROPIC_MODEL

[duyetbot]

Why

anyr claude --model anyrouter/auto[1m] showed Claude status anyrouter/auto[200k] (low) because model_id_for_tool peeled the floor and set ANTHROPIC_MODEL=anyrouter/auto. Claude Code then invented [200k] from its default window. Extra-body min_context does not fix the HUD label.

What

• Claude + virtual presets (anyrouter/auto, free, byok, …): re-apply [1m] / [500k] on ANTHROPIC_MODEL from the peeled suffix or routing.min_context.
• Concrete catalog ids still strip the suffix (stealth/ox-alpha[1m] → stealth/ox-alpha) so they do not 404.
• Virtual auto with floor ≥ 1M also sets CLAUDE_CODE_AUTO_COMPACT_WINDOW=1000000.
• Do not use catalog context_length (often 200k) as the HUD suffix.

Proof

• cargo test --locked --all-targets green locally.
• Dry-run (anyr claude --dry-run --model anyrouter/auto[1m]):
  • ANTHROPIC_MODEL=anyrouter/auto[1m]
  • CLAUDE_CODE_EXTRA_BODY={"provider":{"min_context":1000000}}
  • CLAUDE_CODE_AUTO_COMPACT_WINDOW=1000000
• Concrete: ANTHROPIC_MODEL=stealth/ox-alpha (suffix stripped).

Parent squash-merges. Release-please can bump after merge.

[github-actions]

anyr size and startup

Startup is wall time for a cold anyr --version / anyr --help (median of 21 runs). Size is the stripped release binary, or the .wasm for the browser demo.

Size budget: anyr-linux-x86_64 must stay ≤ 4.0 MiB (4194304 bytes) stripped.

Asset	Kind	Size	--version median	--help median
anyr-darwin-arm64	native	2.8 MiB	7.9 ms	7.8 ms
anyr-darwin-x86_64	native	3.0 MiB	35.55 ms	37.23 ms
anyr-linux-arm64	native	2.8 MiB	0.76 ms	0.79 ms
anyr-linux-x86_64	native	3.1 MiB	0.99 ms	1.09 ms
anyr-windows-x86_64.exe	native	2.6 MiB	8.02 ms	8.0 ms
anyr.wasm	wasm	179.6 KiB	—	—

Budget check: ok

raw timings

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    "size": "2.8 MiB",
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    "target": "aarch64-apple-darwin",
    "os": "macos-latest",
    "startup_version": {
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      "min_ms": 5.3,
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    },
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    "size": "3.0 MiB",
    "version": "0.1.13 (built 2026-09-15 19:25:58)",
    "target": "x86_64-apple-darwin",
    "os": "macos-latest",
    "startup_version": {
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    }
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    "startup_help": {
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    }
  },
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    "kind": "native",
    "path": "D:\\a\\cli\\cli\\anyr-windows-x86_64.exe",
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    "size": "2.6 MiB",
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