Plan: Extract hardcoded constants (org, labels) to TenantConfig#

Summary#

Replace hardcoded GH_ORG constant and label strings ('in-refinement', 'refined', 'in-review', 'agent-blocked') with lookups from TenantConfigService. This makes org and label names configurable per tenant (Wave 2 config extraction). Depends on #348 (TenantConfigService must exist).

Files#

File	Action	Description
`src/config/constants.ts`	modify	Remove `GH_ORG`; inline `ARTEFACTS_REPO` value
`src/hooks/phase-hooks.service.ts`	modify	Inject `TenantConfigService`; replace 5 hardcoded label strings + any org refs
`src/hooks/phase-hooks.service.spec.ts`	modify	Provide `TenantConfigService` mock in test module
`src/webhook/adapters/github.adapter.ts`	modify	Inject `TenantConfigService`; replace 3 `'in-refinement'` comparisons with config lookup
`src/webhook/adapters/github.adapter.spec.ts`	modify	Provide `TenantConfigService` mock in test module
`src/artefacts/artefacts.service.ts`	modify	Inject `TenantConfigService`; replace `GH_ORG` usages (lines 79, 254, 288, 373, 419) with `tenantConfig.org`
`src/artefacts/artefacts.service.spec.ts`	modify	Provide `TenantConfigService` mock; update assertions referencing `GH_ORG`
`src/hooks/hooks.module.ts`	modify	Add `TenantConfigService` to module providers/imports if not already present
`src/webhook/webhook.module.ts`	modify	Add `TenantConfigService` to module providers/imports if not already present

Steps#

Remove GH_ORG from constants.ts: Delete the GH_ORG export. Change ARTEFACTS_REPO to use inline string 'AgentSDE/agent-core-artefacts' (infrastructure constant, not tenant-specific per issue scope).
Update phase-hooks.service.ts: Inject TenantConfigService via constructor. Replace 'agent-blocked' → tenantConfig.labels.agentBlocked, 'in-refinement' → tenantConfig.labels.inRefinement, 'refined' → tenantConfig.labels.refined, 'in-review' → tenantConfig.labels.inReview at lines 123, 216, 224, 238, 252, 256, 290.
Update github.adapter.ts: Inject TenantConfigService. Replace 'in-refinement' string comparisons at lines 136, 567, 638 with tenantConfig.labels.inRefinement.
Update artefacts.service.ts: Inject TenantConfigService. Replace all GH_ORG references (lines 79, 254, 288, 373, 419) with this.tenantConfig.getConfig().org.
Update unit tests: Add TenantConfigService mock (returning default config values) to test modules for phase-hooks.service.spec.ts, github.adapter.spec.ts, and artefacts.service.spec.ts.
Verify: Run tsc --noEmit, npm run lint, npm run test. Grep for remaining GH_ORG and hardcoded label strings in src/.

Verification#

grep -r "GH_ORG" src/ returns zero results (excluding test assertions that reference the default value 'AgentSDE')
grep -rn "'in-refinement'\|'refined'\|'in-review'\|'agent-blocked'" src/hooks/phase-hooks.service.ts src/webhook/adapters/github.adapter.ts returns zero results
npm run test and npm run lint pass clean

Risks#

Dependency on #348: TenantConfigService must be merged first. If the interface shape changes, config accessor calls in this PR will need updating.
ARTEFACTS_REPO inlining: Changing from ${GH_ORG}/... to a hardcoded string is safe since ARTEFACTS_REPO is infrastructure-scoped, but creates a second 'AgentSDE' hardcoded string in constants.ts — acceptable per issue scope.