docs(adr): mark ADR 0006 Accepted (#460)

Merging #459 accepts the decision: the check-in (optionally drink-linked)
is the primary My Festival entity. Flip status Proposed -> Accepted and
drop the (Proposed) markers from both doc indexes.

Relates to #315

Co-authored-by: Claude <noreply@anthropic.com>

Author: richardthe3rd

docs/README.md

@@ -30,7 +30,7 @@ Key decisions with context, alternatives considered, and consequences.
 - **[0003](adr/0003-parallel-build-strategy.md)** - Parallel Build Strategy for Android Releases
 - **[0004](adr/0004-path-based-url-strategy.md)** - Path-Based URL Strategy for Deep Linking
 - **[0005](adr/0005-e2e-testing-strategy.md)** - E2E Testing Strategy (Playwright for URL smoke tests)
-- **[0006](adr/0006-check-in-as-primary-my-festival-entity.md)** - The Check-in as the Primary My Festival Entity (Proposed)
+- **[0006](adr/0006-check-in-as-primary-my-festival-entity.md)** - The Check-in as the Primary My Festival Entity
 
 ### 🔄 processes/ - Development & Operational Processes
 
@@ -78,7 +78,7 @@ Bugs, features, and tasks are tracked in [GitHub Issues](https://github.com/rich
 - Shared UI components → [code/ui-components.md](code/ui-components.md)
 
 **Understand a past decision:**
-- Why is a check-in (a drink or non-drink entry) the primary My Festival entity? → [ADR 0006](adr/0006-check-in-as-primary-my-festival-entity.md) (Proposed)
+- Why is a check-in (a drink or non-drink entry) the primary My Festival entity? → [ADR 0006](adr/0006-check-in-as-primary-my-festival-entity.md)
 - Why path-based URLs? → [ADR 0004](adr/0004-path-based-url-strategy.md)
 - Why Playwright for E2E? → [ADR 0005](adr/0005-e2e-testing-strategy.md)
 - Why cache pub/npm but not build artifacts? → [ADR 0001](adr/0001-github-actions-caching-strategy.md)

docs/adr/0006-check-in-as-primary-my-festival-entity.md

@@ -1,6 +1,6 @@
 # ADR 0006: The Check-in as the Primary My Festival Entity
 
-**Status**: Proposed
+**Status**: Accepted
 
 **Date**: 2026-07-04
 

docs/adr/README.md

@@ -32,7 +32,7 @@ Each ADR follows this structure:
 | [0003](0003-parallel-build-strategy.md) | Parallel Build Strategy for Android Releases | Accepted | 2025-12-27 |
 | [0004](0004-path-based-url-strategy.md) | Path-Based URL Strategy for Deep Linking | Accepted | 2025-12-21 |
 | [0005](0005-e2e-testing-strategy.md) | E2E Testing Strategy (Playwright for URL Smoke Tests) | Accepted | 2025-12-21 |
-| [0006](0006-check-in-as-primary-my-festival-entity.md) | The Check-in as the Primary My Festival Entity | Proposed | 2026-07-04 |
+| [0006](0006-check-in-as-primary-my-festival-entity.md) | The Check-in as the Primary My Festival Entity | Accepted | 2026-07-04 |
 
 ## Creating a New ADR