Baixar ClaudeForge 2026.3.901 per a Windows

## Downloads

| Platform | Architecture | File |
|-----------------------|----------------|----------------------------------------------------------------------------|
| Windows | x64 | `ClaudeForge-win-x64.zip` |
| Windows | ARM64 | `ClaudeForge-win-arm64.zip` |
| Linux | x64 | `ClaudeForge-linux-x64.tar.gz` |
| Linux | ARM64 | `ClaudeForge-linux-arm64.tar.gz` |
| macOS (Intel) | x64 | `ClaudeForge-osx-x64.tar.gz` |
| macOS (Apple Silicon) | ARM64 | `ClaudeForge-osx-arm64.tar.gz` |

The version (2026.3.901) is encoded in the release tag rather than in
the archive filenames — publish.ps1 produces unversioned artefact names
so local dev builds and CI builds share one filename pattern.

**Linux:** Extract, then run the bundled `linux-setup.sh` to install a per-user `.desktop` entry so Wayland compositors render the window icon correctly:
```bash
tar -xzf ClaudeForge-linux-x64.tar.gz -C ~/ClaudeForge
cd ~/ClaudeForge
./linux-setup.sh
./ClaudeForge
```

**macOS:** The binary is unsigned. Use the bundled `allow-app-to-run.sh` to strip the Gatekeeper quarantine xattr from every file in the extracted directory:
```bash
tar -xzf ClaudeForge-osx-arm64.tar.gz -C ~/ClaudeForge
cd ~/ClaudeForge
./allow-app-to-run.sh
./ClaudeForge
```

---

## What's Changed

Claude Fable 5.1 (`claude-fable-5-1`) is the current Fable build, so the `fable`
alias now resolves to it and Fable 5 becomes a legacy-but-still-pinnable row.
Verified against the models overview rather than recall — Fable 5 is listed
under "Legacy models (still available)".

Followed the AGENTS.md / docs/MODEL-CATALOG.md "new model launch" playbook:

- model-catalog.json — new `claude-fable-5-1` row (1M context, effort low..max
incl. ultracode, default `high`, auto-mode capable, copied from the outgoing
build); `alias: "fable"` moved onto it; `aliases.fable` repointed; the previous
holder demoted to `legacy: true, alias: null` (row kept — still a valid pin).
Invariant preserved: exactly one non-legacy row per family alias.
- claude-code-settings.overlay.json — AutoCompleteBox suggestion and the
`model.description` example swapped to the new snapshot id.
- enumdescriptions.json — added the 5.1 pin tooltip, refreshed the `fable` and
`best` tooltips, and REPLACED the old pin row rather than accumulating it.
`model.examples` <-> tooltip keys are exactly 1:1 (11/11, no orphans).

No test change needed: ModelCatalogTests only hardcodes the `opus` alias target.
The bundled JSON schema is untouched — schemastore.org omits model names, so
`refresh-schema` is never the mechanism that adds a model (a dry run confirms
zero content changes; PR #33 already brought the schema current).

Docs: both playbooks now name where to verify model facts
(platform.claude.com models overview) and warn that a family can supersede
itself within a generation — Fable 5 -> 5.1 is not a whole-number bump. That
lookup was the one step being re-derived every session.

Verified: validate-model-catalog.ps1 passes (models=9, aliases=4); full suite
2708 passed / 11 skipped / 0 failed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>