feat: add abdominal X-ray study

[maxirmx]

Summary

• add the 26-section structured Рентгенография брюшной полости catalog with stable abdominal X-ray IDs
• model the four independent checkbox groups, five composite choice ranges, conditional continuations, and automatic hidden-branch cleanup
• cover normalization, validation, editor interactions, API round trips, read-only history, search, responsive hierarchy, and end-to-end persistence
• include the existing 0.15.0 package/version changes

Validation

• npm run lint:check
• npm test (505 tests)
• npm run build
• npm run coverage (new catalog: 100% statements/functions/branches)
• npm run test:e2e:compose (2 passed)

Closes #114

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.25%. Comparing base (20090a2) to head (e4fc200).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #116      +/-   ##
==========================================
+ Coverage   94.16%   94.25%   +0.09%     
==========================================
  Files          76       77       +1     
  Lines        6833     6853      +20     
  Branches     2373     2910     +537     
==========================================
+ Hits         6434     6459      +25     
+ Misses        394      389       -5     
  Partials        5        5              

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[Copilot]

🟢 Approval recommended

The new study type is consistently wired into the contracts catalog and is backed by broad unit + E2E coverage across validation, editor behavior, history rendering, and search indexing.

Pull request overview

Adds a new structured instrumental study type for abdominal X-ray to the contracts catalog and extends unit/e2e coverage so the study can be edited, validated, indexed for search, round-tripped through the API, and rendered in history.

Changes:

• Introduces the Рентгенография брюшной полости study catalog (26 top-level findings) with composite selection sets, multi-select checkbox groups, and required continuations.
• Extends unit tests and E2E flows to cover editor interactions, normalization/validation, history rendering, and encounter search indexing for the new study type.
• Bumps project/package versions to 0.15.0 and updates lockfile accordingly.

File summaries

File	Description
vitest.config.ts	Includes the new contracts entrypoint in coverage include globs.
tests/medicalRecordEntry.spec.ts	Adds regression test for recursive rendering of abdominal X-ray findings in history.
tests/medicalEncounter.spec.ts	Extends encounter search indexing coverage to include abdominal X-ray studies.
tests/instrumentalTestsValidation.spec.ts	Adds validation error placement + acceptance tests for abdominal X-ray composite sets/continuations.
tests/instrumentalTestsEditor.spec.ts	Adds editor interaction test for abdominal X-ray multi-selects, selection sets, and branch cleanup.
tests/instrumental.spec.ts	Verifies catalog structure, selection modes/sets, and normalization rules for abdominal X-ray.
packages/contracts/src/xrayAbdomen.ts	New abdominal X-ray finding catalog definition.
packages/contracts/src/instrumental.ts	Registers the abdominal X-ray study in INSTRUMENTAL_STUDY_CATALOG.
packages/contracts/package.json	Bumps contracts package version to 0.15.0.
package.json	Bumps workspace version to 0.15.0.
package-lock.json	Lockfile updates for version bump and dependency resolution changes.
e2e/operational.spec.ts	Adds full end-to-end creation/edit/history/search assertions for abdominal X-ray.
api-node/test/commands.spec.ts	Adds command-boundary validation test for abdominal X-ray normalization/labeling.
api-node/package.json	Bumps API package version to 0.15.0.

Review details

• Files reviewed: 13/14 changed files
• Comments generated: 0
• Review effort level: Lite

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