docs: update all documentation for Sprint 1 completion

- Update README.md with badges, project status, and improved structure
- Update CHANGELOG.md with Project Review Sprint 1 and version 0.1.1
- Update PRD status to reflect Sprint 1 completion
- Update ingestion script spec status to Completed with review link
- Update Sprint 1 verification report with Project Review reference
- Add comprehensive Sprint 1 Project Review document

Refs: Project Review conducted by agent staff (Product Manager, Tech Lead, Security Auditor)

CHANGELOG.md

@@ -9,11 +9,33 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- docs: Add AGENTS.md with complete agent rules and workflow
-  - Agent staff configuration with 7 specialized roles
-  - Operational workflow (Spec-Driven, TDD, Sacchi Method)
-  - Git workflow conventions (Conventional Commits, Atomic Commits)
-  - Configuration structure for .opencode/agents/ and .opencode/skills/
+- docs: Project Review Sprint 1 with agent staff analysis
+  - Product Manager UVP alignment assessment
+  - Tech Lead architecture coherence review
+  - Security Auditor risk analysis
+  - Sprint 1 review document in `docs/reviews/s`
+
+### Changed
+
+- docs: Updated README.md with project status badges and improved structure
+- docs: Updated PRD status to reflect Sprint 1 completion
+- docs: Updated ingestion script spec status to "Completed"
+- docs: Updated Sprint 1 verification report with Project Review reference
+
+## [0.1.1] - 2026-04-02
+
+### Added
+
+- docs: Project Review Sprint 1 complete analysis
+  - Product Manager review: UVP alignment (7.05/10)
+  - Tech Lead review: Architecture assessment (7.5/10)
+  - Security Auditor review: Risk analysis (5.75/10)
+  - Comprehensive recommendations for Sprint 2
+
+### Changed
+
+- docs: Major README.md refactoring with badges and improved navigation
+- docs: Updated all sprint documentation to "Completed" status
 
 ## [0.1.0] - 2026-04-02