docs(openspec): add OpenSpec changes for FN-005, FN-006, FN-008, FN-009, FN-010

- Add frontend-foundation change (FN-005) with 46 tasks
- Add deployment-config change (FN-006) with 27 tasks
- Add runfusion-poc/opencode-poc change (FN-008) with 25 tasks
- Add config-secrets change (FN-009) with 31 tasks
- Add codeserver-spawn change (FN-010) with 38 tasks
- Include project specsheet and configuration
- Archive completed deployment-config change

openspec/changes/runfusion-poc/specs/health-reporting/spec.md

@@ -0,0 +1,22 @@
+## ADDED Requirements
+
+### Requirement: Tool reports health status
+The system SHALL provide a mechanism for OpenCode to report its health.
+
+#### Scenario: Health endpoint
+- **WHEN** the OpenCode container is running
+- **THEN** it exposes a / endpoint for health checks
+- **AND** returns 200 when the web terminal is ready
+
+#### Scenario: Health check in Traefik
+- **WHEN** the container is spawned
+- **THEN** Traefik uses the health endpoint for routing decisions
+- **AND** unhealthy containers are removed from the load balancer
+
+### Requirement: Platform tracks tool health
+The system SHALL track and display the health of OpenCode instances.
+
+#### Scenario: Status display
+- **WHEN** the user views an OpenCode instance
+- **THEN** the current status is displayed (healthy, unhealthy, starting)
+- **AND** the status updates automatically