Add bounded Date runtime for Spinel

[thomasklemm]

Bounded program-defined Date for Spinel, with ISO SQL/JSON seams and an omit-when-unused Date package so apps without date columns do not hit matz/spinel#7334 (Time#strftime poly break).

What works now

Domain	Status on this PR
Date-only (t.date, Date.new / iso8601 / month shift, SQL bind, JSON YYYY-MM-DD)	Supported on Spinel when the app uses dates
Time / DateTime columns (t.datetime / t.timestamp)	Unchanged — still the existing parse_db_time / json_time path (clock + zone). Not part of this Date package
Ruby DateTime class	Not in scope — stays ledgered; this PR does not add a program-defined DateTime
Campfire (no date columns)	Date package omitted; default as_json still loads

Honest boundary: Date-only calendar values are the admit contract. Timestamp columns and stdlib-shaped DateTime are separate seams and are not claimed here.

What’s in this PR

• runtime/spinel/date.rb (+ RBS) — admitted Ty::Date surface
• Omit-gated Date package: class + parse_db_date / format_db_date + date JSON rewrite (boot inject when app_uses_date)
• Always-on Spinel as_json → _as_json_only (time-aware shared seam); date rewrite only when Date loads
• schema_date_columns + lowering; empty-string format → nil; Date escape_value when loaded
• CI: framework-tests-spinel fetches real-blog for date_columns_spinel; ci-plan selects that suite for Date package files

Metrics

What	Surface	Where	Pipeline	Result
Analyzer + omit/emit	tests/date_columns.rs	synthetic calendar overlays	analyze + gate + emit	11/11
Spinel date contract	tests/date_columns_spinel.rs	real-blog + calendar_entries	emit → AOT → run	1/1
Campfire Date omit	spinel survey	/tmp/campfire	emit	omitted (no date.rb / date parse / date JSON; as_json kept)
Campfire files	same	same	emit	1275
Bar B	shared runtime/ruby	Bar B test	analyze	562
AR RBS probe	active_record/	RBS probe	analyze	1400

Commands

cargo test --locked --test date_columns
cargo test --locked --test date_columns_spinel -- --ignored
cargo test --locked --test runtime_src_integration every_runtime_method_body_concretely_typed
cargo test --locked --test inference_on_spinel_blog_runtime_with_rbs

Hosted CI: prefer ci:spinel (already labeled).

Refs #303

Summary by CodeRabbit

• New Features
  • Added support for date-only values in Spinel, including validation, parsing, formatting, database persistence, date-based queries, and JSON serialization.
  • Date support is included only in applications that use date columns; applications without them retain their existing runtime.
• Bug Fixes
  • Empty date strings are now handled as empty values during database date parsing and formatting.
• Tests
  • Added Spinel coverage for date operations and ensured CI prepares the required fixture before running Spinel checks.

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📥 Commits

Reviewing files that changed from the base of the PR and between 6199d2a and 56986cd.

📒 Files selected for processing (6)

• runtime/ruby/active_record/base.rb
• runtime/spinel/scaffold/boot.rb
• runtime/spinel/scaffold/ruby_overlay/runtime/active_support_time_parsing.rb
• runtime/spinel/sqlite_adapter.rb
• scripts/ci-plan.py
• tests/ci_plan_test.py

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📝 Walkthrough

Walkthrough

Spinel now supports bounded Date values, including conditional runtime emission and date-aware Active Record serialization and SQLite handling. Generated models expose date columns separately from time columns. Tests and CI routing cover the new support.

Changes

Spinel Date support

Layer / File(s)	Summary
Date value and schema metadata runtime/spinel/date.rb, runtime/spinel/date.rbs, src/lower/model_to_library/schema.rs, runtime/ruby/active_record/base.rb, runtime/ruby/active_record/base.rbs, tests/date_columns.rs, tests/model_lowerer.rs	Spinel adds a bounded Date implementation and RBS declaration. Generated models expose schema_date_columns separately from time columns, and the associated tests check the generated method.
Date detection and runtime emission src/project.rs, runtime/spinel/scaffold/boot.rb, docs/pipeline/runtime.md, runtime/spinel/active_support_time_parsing.rb, tests/cli_allow_unsupported_hint.rs, tests/date_columns.rs	Date detection now allows Spinel apps to use Date. The project conditionally emits Date runtime files, signatures, and boot requires. Tests cover emitted and omitted runtime files, and the runtime documentation records the Spinel Date boundary.
Database and JSON date handling runtime/spinel/active_record_serialization.rb, runtime/spinel/active_record_serialization.rbs, runtime/spinel/active_record_date_serialization.rb, runtime/spinel/active_record_date_serialization.rbs, runtime/spinel/active_support_date_parsing.rb, runtime/spinel/active_support_date_parsing.rbs, runtime/spinel/scaffold/ruby_overlay/runtime/active_support_time_parsing.rb, runtime/spinel/sqlite_adapter.rb	Active Record selects columns for JSON serialization and formats selected date-column values. ActiveSupport adds database date parsing and formatting helpers, and SQLite formats Date values for SQL escaping.
Date integration tests and CI routing tests/date_columns_spinel.rs, scripts/ci-plan.py, tests/ci_plan_test.py, .github/workflows/ci.yml, tests/inference_on_spinel_blog_runtime_with_rbs.rs	An ignored Spinel integration test covers Date operations, persistence, JSON serialization, and SQLite behavior. CI routing selects date-focused tests for related runtime changes, and the framework test job downloads the generated fixture before running checks.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant Model as ActiveRecord model
  participant Adapter as SQLite adapter
  participant Support as ActiveSupport date helpers
  Model->>Adapter: Persist or query a Date value
  Adapter->>Support: Format date as ISO text
  Support-->>Adapter: Return YYYY-MM-DD or nil
  Adapter-->>Model: Use formatted date in database operation

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Suggested reviewers: rubys

Merge Risk: ⚪ Minimal · up to 56986

No identified issue blocks merging this change after normal validation.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 56986

The date package has a narrow input contract and preserves existing SQL-value escaping and JSON attribute-selection controls. No introduced security bypass was demonstrated, but application-specific exposure and recovery behavior remain unverified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The new Date-specific behavior can affect date-bearing models, SQLite values, and serialized records throughout an application whose analysis admits Date usage. The default JSON entrypoint also loads in date-free Spinel applications. Concrete tenant counts, exposed routes, and deployment environments are not established by this evidence.

Security Findings and Attack Paths

• inferred — The inspected path from supplied date text through validation, normalization, and SQL-value rendering does not demonstrate an introduced SQL-injection bypass. Malformed Date input raises, and accepted Date values still reach the existing quoted-string escaping control. Application-level authorization and error handling were not established.

Trust Boundaries and Controls

• observed — Schema metadata, rather than input content, selects Date-column JSON rewriting. The underlying serializer first intersects requested attributes with actual schema columns; the wrapper changes existing hash values without broadening the selected attribute set.

Resilience and Maintainability Implications

• inferred — Date normalization can fail before a generated writer changes its raw storage slot. The existing save lifecycle still performs callbacks around persistence; the inspected evidence does not establish rollback of callback side effects or multi-statement atomicity. Those controls were not shown to be weakened by this PR.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 26.23% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 61 functions across 19 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: adding a bounded Date runtime for Spinel.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[thomasklemm]

Head: thomasklemm:cursor/spinel-date-runtime-41f1 against rubys/roundhouse. Refs #303.

Metrics are in the PR body. Prefer the ci:spinel label for hosted Spinel/Campfire lanes (already applied) — not the full multi-target matrix.

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Actionable comments posted: 1

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Inline comments:
Review comments at @scripts/ci-plan.py:
- Around line 124-133: Update the filename check that adds date_columns_spinel
in the test-selection logic to include active_support_time_parsing.rb and
sqlite_adapter.rb, so changes to either runtime file select the date conversion
suite. Preserve the existing filename mappings.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 03bdebbb-7d4f-42ca-bdb0-90f6582e9c3f

📥 Commits

Reviewing files that changed from the base of the PR and between 45ca74c and 33c0dc0.

📒 Files selected for processing (21)

• .github/workflows/ci.yml
• docs/pipeline/runtime.md
• runtime/ruby/active_record/base.rb
• runtime/ruby/active_record/base.rbs
• runtime/spinel/active_record_date_serialization.rb
• runtime/spinel/active_support_time_parsing.rb
• runtime/spinel/active_support_time_parsing.rbs
• runtime/spinel/date.rb
• runtime/spinel/date.rbs
• runtime/spinel/scaffold/boot.rb
• runtime/spinel/scaffold/ruby_overlay/runtime/active_support_time_parsing.rb
• runtime/spinel/sqlite_adapter.rb
• scripts/ci-plan.py
• src/lower/model_to_library/schema.rs
• src/project.rs
• tests/cli_allow_unsupported_hint.rs
• tests/date_columns.rs
• tests/date_columns_spinel.rs
• tests/inference_on_spinel_blog_runtime_with_rbs.rs
• tests/model_lowerer.rs
• tests/runtime_src_integration.rs

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[thomasklemm]

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