Issue 510 — Add read-only DepMap rendering

[rsolerortuno]

Summary

Implements Issue 510: read-only DepMap report rendering.

• adds deterministic Markdown and HTML rendering for DependencyReportEvidence;
• renders coverage, dependency profile, integration state, provenance and limitations;
• supports available and unavailable profiles without converting missing values to zero;
• integrates optional DepMap sections into target hypothesis cards and HTML reports;
• routes evidence by gene symbol in batch writers;
• preserves exact legacy output when dependency evidence is absent;
• escapes HTML values and preserves deterministic ordering.

Scientific boundaries

• no scores are created or modified;
• no ranks are recalculated or mutated;
• baseline preservation remains mandatory;
• production activation remains disabled;
• authorization remains absent;
• human review remains required;
• DepMap dependency is not presented as clinical anti-PD-1 response evidence;
• no snapshot loader, matrix access, pipeline wiring or CLI integration is included.

Validation

• Issue 510 rendering tests passed;
• Issue 509 contract tests passed;
• feasibility, evidence-reporting and release-documentation tests passed;
• full repository suite passed;
• AGY adversarial audit completed;
• Claude review approved;
• git diff --check passed.

Expanded regression and isolation coverage remains deferred to Issue 511.