fix: use ANTHROPIC_AUTH_TOKEN consistently in all output messages, bu…

…mp v0.9.6

docs: add CHANGELOG for v0.9.0–0.9.5

fix: override native Anthropic model IDs while respecting BlockRun mo…

…dels

Claude Code sends native model IDs (e.g. claude-sonnet-4-6-20250514)
that don't exist on BlockRun. Now correctly detects these by checking
for "/" — native IDs without "/" get replaced with currentModel,
while explicit BlockRun models (provider/model) pass through.

Bump to v0.9.4

feat: expand model catalog — 50+ models, updated routing & pricing

- Add 25+ model shortcuts (codex, nano, o3, o4, grok-4, flash, r1, devstral, etc.)
- Complete pricing table for all supported models across 8 providers
- Update smart router cost table and eco tier fallbacks
- Switch default free model from gpt-oss-120b to nemotron-ultra-253b
- Bump to v0.9.3

chore: bump to v0.9.2

ci: add build/typecheck CI and npm publish workflows

- CI: runs on push/PR to main, tests Node 20 + 22, type check + build
- Publish: triggers on GitHub release, publishes to npm with provenance