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/config-secrets/specs/runtime-injection/spec.md

@@ -0,0 +1,40 @@
+## ADDED Requirements
+
+### Requirement: Configs are mounted into tool containers
+The system SHALL mount configuration values as files into spawned tool containers.
+
+#### Scenario: Config file mount
+- **WHEN** a tool instance is spawned
+- **THEN** all applicable configs are written to /app/config/
+- **AND** each config is a separate JSON file named by key
+- **AND** files have restrictive permissions (0400)
+
+#### Scenario: Config scope resolution
+- **WHEN** configs are resolved for a tool instance
+- **THEN** the system collects configs from all applicable scopes
+- **AND** instance scope overrides project scope
+- **AND** project scope overrides user scope
+- **AND** user scope overrides global scope
+
+### Requirement: Secrets are injected as environment variables
+The system SHALL inject secret values as environment variables into tool containers.
+
+#### Scenario: Secret env var injection
+- **WHEN** a tool instance is spawned
+- **THEN** all applicable secrets are decrypted
+- **AND** injected as environment variables with uppercase keys
+- **AND** the container process can access them
+
+#### Scenario: Secret scope resolution
+- **WHEN** secrets are resolved for a tool instance
+- **THEN** the same scope hierarchy applies as configs
+- **AND** closest scope wins on key collision
+
+### Requirement: Missing secrets fail spawn
+The system SHALL prevent spawning if referenced secrets are missing.
+
+#### Scenario: Validate secrets before spawn
+- **WHEN** a spawn request references a secret by key
+- **AND** the secret does not exist in any applicable scope
+- **THEN** the spawn fails with a clear error message
+- **AND** no container is created