Summary

Two related changes bundled together:

1. Add FastestStrategy routing strategy — selects the model with the lowest estimated_latency_ms, as specified in DESIGN_SPEC §9.4
2. Remove all vendor-specific names from source code, tests, and documentation — enforce vendor-agnostic naming everywhere

Success Criteria

FastestStrategy

• ProviderModelConfig has estimated_latency_ms: int | None field (default None, gt=0)
• ResolvedModel has matching estimated_latency_ms field, wired from config
• ModelResolver.all_models_sorted_by_latency() returns models sorted ascending, None last
• FastestStrategy class implements RoutingStrategy protocol with name = "fastest"
• Strategy picks the fastest model within budget; falls back to cheapest when no latency data exists
• Mixed None/non-None latency: only models with data are considered
• Budget exceeded by all fast models: returns fastest anyway with warning in reason
• No models registered: raises NoAvailableModelError
• STRATEGY_NAME_FASTEST constant and FastestStrategy re-exported through routing/__init__.py and providers/__init__.py
• Registered in STRATEGY_MAP as "fastest"
• DESIGN_SPEC §9.4 comment updated to list all 6 implemented strategies

Vendor-Agnostic Cleanup

• Zero mentions of Anthropic, Claude, Opus, Sonnet, Haiku in src/ (code + docstrings + comments)
• Zero mentions in tests/ (all .py files)
• Generic naming convention used consistently:
  • Provider: example-provider
  • Model IDs: example-large-001, example-medium-001, example-small-001
  • Aliases: large, medium, small
  • Test fixtures: test-provider, test-small-001, test-medium-001, test-large-001
• DESIGN_SPEC.md examples use generic names (vendor names only in factual industry references like MCP ownership)
• README.md provider description is vendor-neutral
• CLAUDE.md has explicit vendor-agnostic rule to prevent future regression

Quality Gates

• All 1850 tests pass
• Coverage ≥ 80% (actual: 94.97%)
• ruff check clean
• mypy --strict clean
• All pre-commit hooks pass

Branch

feat/fastest-strategy-vendor-cleanup

Files Changed (40 files)

Source (15 files):

• src/ai_company/config/schema.py — latency field + docstring cleanup
• src/ai_company/providers/routing/models.py — latency field on ResolvedModel
• src/ai_company/providers/routing/resolver.py — wire latency + all_models_sorted_by_latency()
• src/ai_company/providers/routing/strategies.py — FastestStrategy + _fastest_within_budget() helper
• src/ai_company/providers/routing/__init__.py — re-exports
• src/ai_company/providers/__init__.py — re-exports
• src/ai_company/core/agent.py — docstring cleanup
• src/ai_company/providers/drivers/__init__.py — docstring cleanup
• src/ai_company/providers/drivers/litellm_driver.py — docstring cleanup
• src/ai_company/providers/drivers/mappers.py — comment cleanup
• src/ai_company/providers/models.py — docstring cleanup
• src/ai_company/providers/registry.py — docstring cleanup

Tests (25 files): vendor name replacements + new FastestStrategy/latency tests

Docs (3 files): CLAUDE.md, DESIGN_SPEC.md, README.md