added auto-update command

[atsaplin]

Summary

• Add non-interactive auto-update system that detects missing model IDs from
  external price sources (OpenRouter, LiteLLM, Simon Willison), classifies them as
  auto-resolvable aliases or models needing human review, and applies safe changes to
  provider YAML files
• Add scripts/auto-update.sh orchestrator script
  automate the full flow (fetch prices, detect, apply, format, build, open PR). This can be called by a auto-scheduled github action later (if desired)
• Add 40 unit tests covering name matching, price matching, classification logic,
  and routing path filtering

How it works

When providers release new models (e.g. gpt-5.2-chat-latest), external sources
pick up the new slug before this repo does. The auto-update system:

1. Detects missing model IDs across all providers and sources
2. Classifies each as auto-resolvable (exact/subset price match + name prefix
   match) or needing human review
3. Applies safe aliases to provider YAMLs, including dot/dash variants
   (gpt-5.2 ↔ gpt-5-2)
4. Filters noise: LiteLLM routing paths (openrouter/meta-llama/...), Bedrock
   ARN-style IDs (us.anthropic.claude-...)

The Python CLI (uv run -m prices auto_update) outputs a JSON report only — zero
side effects. All file mutations, formatting, building, and PR creation are handled
by the shell script.

Github Action

Seperately to this PR, you can add a github action to execute this at a specific cadence .

Example:

name: Auto-Update Prices
on:
  schedule:
    - cron: "0 8 * * 1" # Weekly Monday 08:00 UTC
  workflow_dispatch: {} # Manual trigger

permissions:
  contents: write
  pull-requests: write

jobs:
  auto-update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          repository: atsaplin/genai-prices

      - uses: astral-sh/setup-uv@v6

      - run: uv sync --frozen --all-packages

      - name: Run auto-update and open PR
        run: ./scripts/auto-update.sh --pr
        env:
          GH_TOKEN: ${{ github.token }}

Files

File	Description
prices/src/prices/auto_update.py	Core detection/classification/apply logic
prices/src/prices/__main__.py	Register auto_update CLI command
scripts/auto-update.sh	Orchestrator: fetch, detect, apply, format, build, PR

|
| .github/workflows/auto-update-prices.yml | Weekly scheduled Action (Monday
08:00 UTC) |
| Makefile | auto-update target |
| tests/test_auto_update.py | 40 unit tests |

Test plan

• make test — 379 tests pass (40 new + 339 existing)
• End-to-end local run: detects 8 aliases, applies to 5 providers
• No temp file artifacts left on disk (mktemp + trap cleanup)
• jq PR body generation renders clean markdown