feat: enhance LLM dev workflow

[TheTrueAI]

No description provided.

[Copilot]

Pull request overview

This PR tightens and documents the developer/agent workflow for Immermatch, while applying small refactors driven by stricter linting and improving CI expectations.

Changes:

• Consolidates runtime dependencies into base pyproject.toml (removing the prod extra) and updates workflows accordingly.
• Enables additional Ruff rule families (B, C4, SIM, RET) and applies small code refactors to satisfy them.
• Adds/updates agent + Copilot guidance docs (CLAUDE quick reference + Copilot prompt files) and raises CI coverage threshold.

Reviewed changes

Copilot reviewed 17 out of 18 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_app_consent.py	Adjusts exception chaining to satisfy stricter linting (Bugbear-style guidance).
pyproject.toml	Removes prod extra, expands Ruff lint selection, keeps test/dev extras.
immermatch/serpapi_provider.py	Simplifies localise_query() return to align with return-style lint rules.
immermatch/pages/verify.py	Replaces try/except with contextlib.suppress for secrets→env injection.
immermatch/pages/unsubscribe.py	Same contextlib.suppress refactor for secrets→env injection.
immermatch/pages/privacy.py	Same contextlib.suppress refactor for secrets→env injection.
immermatch/pages/impressum.py	Same contextlib.suppress refactor for secrets→env injection.
immermatch/bundesagentur.py	Minor parsing simplification and flattens executor context management.
immermatch/app.py	Refactors secrets→env injection to contextlib.suppress.
CLAUDE.md	Replaces prior stub with a quick-reference agent guide.
AGENTS.md	Updates testing table and clarifies CLAUDE.md’s role; adds ruff format --check.
.github/workflows/daily-digest.yml	Installs package without .[prod] extra (now removed).
.github/workflows/ci.yml	Raises coverage threshold from 50% → 60%.
.github/copilot/write-tests.prompt.md	Adds Copilot prompt guidance for tests (contains a couple incorrect patch targets).
.github/copilot/new-pydantic-model.prompt.md	Adds Copilot prompt guidance for models (contains incorrect list-default guidance).
.github/copilot/new-db-function.prompt.md	Adds Copilot prompt guidance for DB functions.
.github/copilot-instructions.md	Updates Copilot instructions, adds architecture summary and formatting check.

Comments suppressed due to low confidence (3)

.github/copilot/new-pydantic-model.prompt.md:13

• The guidance to use = [] for list defaults is unsafe (mutable default) and also contradicts this repo’s current Pydantic patterns, which consistently use Field(default_factory=list) for lists. Update this instruction to recommend default_factory=list (or Field(default_factory=list, ...)) for list fields to avoid shared mutable defaults.

3. **Default values:** Use `= []` for simple lists, `default_factory=list` for mutable defaults in `Field()`
4. **Add tests in `tests/test_models.py`:**

.github/copilot/write-tests.prompt.md:9

• immermatch/serpapi_provider.py doesn’t define serpapi_search; the external call is made via GoogleSearch (or you can patch search_jobs). Update this patch target so tests don’t fail with an AttributeError / ineffective mocking.

   - SerpApi: `@patch("immermatch.serpapi_provider.serpapi_search")`

.github/copilot/write-tests.prompt.md:10

• immermatch/bundesagentur.py uses httpx.Client, not requests.get. Update the suggested patch target to something that actually intercepts network calls (e.g., patch httpx.Client.get in the module under test, or patch BundesagenturProvider._get_with_retry / _fetch_detail*).

   - Bundesagentur: `@patch("immermatch.bundesagentur.requests.get")`