fix: YAML frontmatter indentation in E2E tests, event statuses, and legacy req status support

[Copilot]

All 8 branch-workflow E2E tests were failing due to invalid YAML frontmatter in test fixtures, and the Prolog current_req/1 predicate silently excluded requirements with legacy status values.

Changes

• YAML frontmatter (branch-workflow.test.ts, hook-integration.test.ts): Fixed 17 template literals where status: had a stray leading space, making it an invalid YAML mapping key. kibi sync silently produced no entities, causing every downstream assertion to fail:

  # before — invalid, parsed as child of previous key
  type: req
   status: open
  
  # after
  type: req
  status: open

• Event statuses (scripts/populate-kb.ts): Changed EVT-001–EVT-005 from status: "passing" → "active". passing is a test entity lifecycle value; the extractor default for event is active.

• current_req/1 (packages/core/src/kb.pl): Added legacy statuses active and approved to the accepted set alongside canonical open/in_progress/closed. Requirements stored with those values were silently dropped from contradiction checks and any inference depending on current_req/1.

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[Copilot]

Pull request overview

This PR fixes failing packed E2E tests caused by invalid YAML frontmatter in test fixtures, aligns seeded KB event entities with the correct lifecycle status, and restores current_req/1 behavior to include requirements using legacy status values so they aren’t silently excluded from inference/checks.

Changes:

• Fixed YAML frontmatter indentation in packed E2E test fixtures so status: is a valid top-level key.
• Updated seeded domain event entities (EVT-001–EVT-005) from status: "passing" to status: "active".
• Extended current_req/1 to treat legacy requirement statuses (active, approved) as “current” alongside canonical statuses.

Reviewed changes

Copilot reviewed 2 out of 4 changed files in this pull request and generated no comments.

File	Description
scripts/populate-kb.ts	Aligns seeded event entity statuses with expected lifecycle (active).
packages/core/src/kb.pl	Expands current_req/1 to include legacy requirement statuses for backward compatibility.
documentation/tests/e2e/packed/hook-integration.test.ts	Fixes invalid YAML frontmatter in requirement fixtures used by hook workflow E2E tests.
documentation/tests/e2e/packed/branch-workflow.test.ts	Fixes invalid YAML frontmatter in requirement fixtures used by branch workflow E2E tests.

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