Files
ccs/ui/src/lib
Kenneth Wong 02c45e088a fix(extended-context): suffix the Fable tier and default it on 1M launches
The previous commit assumed Claude Code's fable resolver strips [1m] and
therefore never wrote the suffix into ANTHROPIC_DEFAULT_FABLE_MODEL. That
premise only holds when ANTHROPIC_BASE_URL is unset or points at
api.anthropic.com. Behind a proxy (CLIProxy, headroom, ...) Claude Code
2.1.259 does the opposite:

- the fable alias resolver passes the env value through untouched, so a
  saved `claude-fable-5-1[1m]` reaches the model picker as-is;
- the context-window resolver grants 1M unconditionally when the model id
  carries [1m], and otherwise trusts a natively-1M model only when the base
  URL is first-party. Bare `claude-fable-5-1` via 127.0.0.1 is clamped to
  200k even though CLIProxy's /v1/models advertises max_input_tokens 1M.

So the suffix is the only thing that turns the long window on for CCS, and
stripping it from the Fable key is what kept `ccs claude --model fable` at
200k. A headroom settings profile with the suffix saved on that key showed
the 1M window in the same Claude Code build, which is how the inversion was
caught.

Changes:

- Drop the suffix-stripping key guard; ANTHROPIC_DEFAULT_FABLE_MODEL now
  receives and keeps [1m] exactly like the opus/sonnet tiers.
- On a long-context launch (explicit --1m, or a saved [1m] on any Anthropic
  tier key) fill a missing Fable tier with the catalog Fable model plus
  [1m]. The model-neutral claude profile pins no Fable model, so `--model
  fable` used to fall back to Claude Code's bare default and lose the window
  even when every other tier asked for 1M. An explicit mapping always wins,
  --no-1m never fills, and providers without a catalog Fable model are left
  alone.
- Add getDefaultFableTierModel() to the model catalog for that default.

Verified with a stub Claude binary that dumps its environment:

  ccs claude --model fable          -> ANTHROPIC_DEFAULT_FABLE_MODEL=claude-fable-5-1[1m]
  ccs claude --1m                   -> ANTHROPIC_DEFAULT_FABLE_MODEL=claude-fable-5-1[1m]
  ccs claude --no-1m --model fable  -> no Fable tier written, ANTHROPIC_MODEL stripped
2026-09-04 02:48:15 +08:00
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