M-2 PR-C: Collapse Policy/Profile/Owner/Team services to ctx-first signatures

- Add ctx first param to 21 service-layer handler-interface methods
  across policy.go (6), profile.go (5), owner.go (5), team.go (5)
- Replace 24 context.Background() call sites with received ctx; use
  context.WithoutCancel(ctx) for subsidiary audit-recording ops to
  preserve fire-and-forget audit semantics without inheriting caller
  cancellation
- Add ctx first param to 21 handler-interface method signatures across
  policies.go (6), profiles.go (5), owners.go (5), teams.go (5)
- Thread r.Context() through 21 HTTP handler sites (ListPolicies,
  GetPolicy, CreatePolicy, UpdatePolicy, DeletePolicy, ListViolations,
  ListProfiles, GetProfile, CreateProfile, UpdateProfile, DeleteProfile,
  ListOwners, GetOwner, CreateOwner, UpdateOwner, DeleteOwner,
  ListTeams, GetTeam, CreateTeam, UpdateTeam, DeleteTeam)
- Update MockPolicyService/MockProfileService/MockOwnerService/
  MockTeamService mock method impls with _ context.Context first param
  (Fn fields unchanged — closures do not need ctx); update mock impls
  in integration/lifecycle_test.go for all four services
- Update 12 service-layer test callsites (policy_test.go ×2,
  owner_test.go ×5, team_test.go ×5, profile_test.go ×13) to pass
  context.Background() at the call site

Audit complete. Commit: 855124a9d9. Sections: 12. Findings: 2/7/10/4/6.

internal/integration/lifecycle_test.go

@@ -1077,70 +1077,70 @@ func (m *mockTargetService) TestConnection(ctx context.Context, id string) error
 
 type mockTeamService struct{}
 
-func (m *mockTeamService) ListTeams(page, perPage int) ([]domain.Team, int64, error) {
+func (m *mockTeamService) ListTeams(_ context.Context, page, perPage int) ([]domain.Team, int64, error) {
 	return []domain.Team{}, 0, nil
 }
 
-func (m *mockTeamService) GetTeam(id string) (*domain.Team, error) {
+func (m *mockTeamService) GetTeam(_ context.Context, id string) (*domain.Team, error) {
 	return nil, fmt.Errorf("team not found")
 }
 
-func (m *mockTeamService) CreateTeam(team domain.Team) (*domain.Team, error) {
+func (m *mockTeamService) CreateTeam(_ context.Context, team domain.Team) (*domain.Team, error) {
 	return &team, nil
 }
 
-func (m *mockTeamService) UpdateTeam(id string, team domain.Team) (*domain.Team, error) {
+func (m *mockTeamService) UpdateTeam(_ context.Context, id string, team domain.Team) (*domain.Team, error) {
 	team.ID = id
 	return &team, nil
 }
 
-func (m *mockTeamService) DeleteTeam(id string) error {
+func (m *mockTeamService) DeleteTeam(_ context.Context, id string) error {
 	return nil
 }
 
 type mockOwnerService struct{}
 
-func (m *mockOwnerService) ListOwners(page, perPage int) ([]domain.Owner, int64, error) {
+func (m *mockOwnerService) ListOwners(_ context.Context, page, perPage int) ([]domain.Owner, int64, error) {
 	return []domain.Owner{}, 0, nil
 }
 
-func (m *mockOwnerService) GetOwner(id string) (*domain.Owner, error) {
+func (m *mockOwnerService) GetOwner(_ context.Context, id string) (*domain.Owner, error) {
 	return nil, fmt.Errorf("owner not found")
 }
 
-func (m *mockOwnerService) CreateOwner(owner domain.Owner) (*domain.Owner, error) {
+func (m *mockOwnerService) CreateOwner(_ context.Context, owner domain.Owner) (*domain.Owner, error) {
 	return &owner, nil
 }
 
-func (m *mockOwnerService) UpdateOwner(id string, owner domain.Owner) (*domain.Owner, error) {
+func (m *mockOwnerService) UpdateOwner(_ context.Context, id string, owner domain.Owner) (*domain.Owner, error) {
 	owner.ID = id
 	return &owner, nil
 }
 
-func (m *mockOwnerService) DeleteOwner(id string) error {
+func (m *mockOwnerService) DeleteOwner(_ context.Context, id string) error {
 	return nil
 }
 
 type mockProfileService struct{}
 
-func (m *mockProfileService) ListProfiles(page, perPage int) ([]domain.CertificateProfile, int64, error) {
+func (m *mockProfileService) ListProfiles(_ context.Context, page, perPage int) ([]domain.CertificateProfile, int64, error) {
 	return []domain.CertificateProfile{}, 0, nil
 }
 
-func (m *mockProfileService) GetProfile(id string) (*domain.CertificateProfile, error) {
+func (m *mockProfileService) GetProfile(_ context.Context, id string) (*domain.CertificateProfile, error) {
 	return nil, fmt.Errorf("profile not found")
 }
 
-func (m *mockProfileService) CreateProfile(profile domain.CertificateProfile) (*domain.CertificateProfile, error) {
+func (m *mockProfileService) CreateProfile(_ context.Context, profile domain.CertificateProfile) (*domain.CertificateProfile, error) {
 	return &profile, nil
 }
 
-func (m *mockProfileService) UpdateProfile(id string, profile domain.CertificateProfile) (*domain.CertificateProfile, error) {
+func (m *mockProfileService) UpdateProfile(_ context.Context, id string, profile domain.CertificateProfile) (*domain.CertificateProfile, error) {
 	profile.ID = id
 	return &profile, nil
 }
 
-func (m *mockProfileService) DeleteProfile(id string) error {
+func (m *mockProfileService) DeleteProfile(_ context.Context, id string) error {
 	return nil
 }