feat(#137): create Forced Continuation Prompt System

Implement prompt generation system that produces continuation prompts
based on verification failures to force AI agents to complete work.

Service:
- generatePrompt: Complete prompt from failure context
- generateTestFailurePrompt: Test-specific guidance
- generateBuildErrorPrompt: Build error resolution
- generateCoveragePrompt: Coverage improvement strategy
- generateIncompleteWorkPrompt: Completion requirements

Templates:
- base.template: System/user prompt structure
- test-failure.template: Test fix guidance
- build-error.template: Compilation error guidance
- coverage.template: Coverage improvement strategy
- incomplete-work.template: Completion requirements

Constraint escalation:
- Attempt 1: Normal guidance
- Attempt 2: Focus only on failures
- Attempt 3: Minimal changes only
- Final: Last attempt warning

Priority levels: critical/high/normal based on failure severity

Tests: 24 passing with 95.31% coverage

Fixes #137

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/continuation-prompts/templates/incomplete-work.template.ts

@@ -0,0 +1,13 @@
+export const INCOMPLETE_WORK_TEMPLATE = `The task implementation is incomplete.
+
+Issues detected:
+{{issues}}
+
+You MUST complete ALL aspects of the task. Do not leave TODO comments or deferred work.
+
+Steps:
+1. Review each incomplete item
+2. Implement the missing functionality
+3. Write tests for the new code
+4. Verify all requirements are met
+`;