Adds "Asserting spans and captures" section to tdd-workflow.md with
RecordingTracer/Logger usage and inline withSpan wrapping pattern for
direct-injection tests. Adds R49/R50 section to testing-strategy.md
covering the no-sentry guard, contract suite span assertions, and
RecordingTracer/Logger field reference. Adds "TRACER / LOGGER (Plan 10)"
subsection to dependency-flow.md showing the bindAll → feature-container
wiring path. Adds an "src/instrumentation/" section to core-shared/AGENTS.md
documenting the two interfaces, three impl pairs, withSpan helper, scrubbers,
both Next.js + Vite/React init helpers, and the subpath exports.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Direct factory injection is now the default mocking pattern (Plan 8).
Container rebinding is reserved for router-level tests.
rebindRepository helpers removed — use cases and controllers are factory
functions; tests construct mocks and pass them in.
New 'Test obligations per layer (Plan 9)' table maps each layer to its
required test types: R10 (controller input), R25 (use-case output
validation), R26 (router error mapping), R27/R28 (presenter view shape).
Refactor log doc-update checklist: testing-strategy.md ticked.
