Coverage Gap Audit findings D-005 (P0) + D-006 (P1) fixed together in a
single commit because they share the same root cause — policy CRUD sending
values the backend silently rejects — and splitting them would leave a
half-working UI between commits.
## D-005 (P0): PoliciesPage dropdown 400s every Create Policy
Root cause
----------
`web/src/pages/PoliciesPage.tsx` populated the Type `<select>` from a
hardcoded `['key_algorithm', 'ownership', 'allowed_issuers', ...]` array.
The backend's `internal/api/handler/validators.go::ValidatePolicyType`
enforces the TitleCase allowlist `AllowedIssuers`, `AllowedDomains`,
`RequiredMetadata`, `AllowedEnvironments`, `RenewalLeadTime` — defined in
`internal/domain/policy.go`. Every Create Policy request was rejected with
`400 invalid policy type`. The error surfaced only as a transient toast;
the modal closed anyway. Silent user-visible failure.
Fix
---
- `web/src/api/types.ts`: added `POLICY_TYPES` and `POLICY_SEVERITIES`
tuples with `as const` and narrowed `PolicyRule.type`, `.severity`, and
`PolicyViolation.severity` to the literal-union types. Dropdown is now
sourced from the tuple; casing drift becomes a compile error.
- `web/src/pages/PoliciesPage.tsx`: rekeyed `severityStyles` /
`severityDots` to the TitleCase values, added `humanize()` for display
(AllowedIssuers → "Allowed Issuers"), removed the `badge-neutral`
fallback that was papering over the mismatch.
- `web/src/api/types.test.ts` (new): pins both tuples exactly. If anyone
edits one side of the frontend/backend contract without the other, CI
fails with a clear assertion. Pure-TS vitest, no RTL dependency.
## D-006 (P1): `severity` field silently dropped on create/update
Root cause
----------
`PolicyRule` had no `Severity` field in `internal/domain/policy.go`. The
frontend has always sent `severity` on create/update, but Go's
`json.Decoder` (default settings, no `DisallowUnknownFields`) silently
dropped it. The value never reached PostgreSQL. Every rule rendered with
the same severity because there was no severity — just a display
computation downstream.
Fix: option (b), full-stack schema add (not delete-the-field)
-------------------------------------------------------------
- Migration `000013_policy_rule_severity` (up + down): adds
`severity VARCHAR(50) NOT NULL DEFAULT 'Warning'` to `policy_rules` with
CHECK constraint `severity IN ('Warning', 'Error', 'Critical')`. No
index — three-value column on a low-thousands-rows table, planner will
seq-scan regardless. PG 11+ metadata-only ADD COLUMN, safe on live data.
- `internal/domain/policy.go`: added `Severity PolicySeverity` field.
- `internal/repository/postgres/policy.go`: plumbed `severity` through
ListRules SELECT + Scan, GetRule SELECT + Scan, CreateRule INSERT,
UpdateRule UPDATE (4 queries).
- `internal/service/policy.go::UpdatePolicy`: if the client omits
severity on a PUT (zero-value empty string), fetch the existing rule
and preserve its severity. Without this, partial updates would trip the
NOT NULL CHECK and 500. Preserves pre-existing behavior for Name/Type
(out of scope).
- `internal/api/handler/policies.go::CreatePolicy`: default empty severity
to `'Warning'`, then validate via `ValidatePolicySeverity`. 400 with
clear message instead of 500 on CHECK violation. `UpdatePolicy`:
validates severity only when provided.
- `internal/mcp/types.go` + `internal/mcp/tools.go`: added optional
`severity` on the MCP `create_policy` / `update_policy` tool inputs so
LLM callers stay in sync with the wire contract.
- `api/openapi.yaml`: added `severity` to the `PolicyRule` schema with
the enum and default.
Acceptance criterion (user-defined)
-----------------------------------
"Create a rule with severity=Critical, reload the page, and still see
Critical — no silent drops." Verified end-to-end: frontend sends
`severity: "Critical"`, handler validates, service persists, DB stores,
GET returns, React renders the correct badge.
Seed data
---------
`migrations/seed.sql`: four demo rules now have differentiated severities
— `pr-require-owner` → Warning, `pr-allowed-environments` → Error,
`pr-max-certificate-lifetime` → Critical, `pr-min-renewal-window` →
Warning. The user called out that seeding all four at the same severity
makes the feature look decorative; differentiation demonstrates the
column carries real signal.
## Integration test fix (side effect of D-006)
`internal/integration/e2e_test.go::TestCrossResourceWorkflow/CreatePolicy`
was sending `"severity": "High"` — a value from the pre-audit severity
vocabulary that the new `ValidatePolicySeverity` correctly rejects with
400. Changed to `"Error"` (closest semantic match in the new TitleCase
allowlist). Only severity reference in the integration/ directory;
verified via grep.
## Out of scope, logged for follow-up (d/D-008)
Three policy-engine drift issues orthogonal to D-005 + D-006, explicitly
deferred per direction:
1. `migrations/seed.sql` policy_rules INSERTs use lowercase TYPE values
(`'ownership'`, `'environment'`, `'lifetime'`, `'renewal_window'`).
These are load-bearing on `internal/service/policy.go::evaluateRule`'s
`switch rule.Type` (which also uses the lowercase strings). Migrating
requires coordinated changes across seed + evaluation engine.
2. `migrations/seed_demo.sql:482-483` contains lowercase `'critical'`
severity — will now fail the new CHECK constraint. Separate fix.
3. `evaluateRule` hardcodes `Severity: domain.PolicySeverityWarning` on
emitted violations and ignores the configured `rule.Config`. The new
severity column is read correctly on the CRUD path but not yet
consulted during evaluation.
## Verification
Backend:
- `go build ./...` — clean
- `go vet ./...` — clean
- `go test -short ./...` — all packages green, including
`internal/service` (policy service), `internal/api/handler` (policy +
MCP handler tests), `internal/integration` (e2e_test.go after fix),
`internal/domain`, `internal/repository/postgres`.
Frontend:
- `tsc --noEmit` — clean
- `vitest run` — 223/223 passing (4 new assertions in types.test.ts)
- `vite build` — clean (only the pre-existing chunk-size warning)
Backend hardening:
- Fix 6 nginx.go non-constant format string build errors
- Add validation.go with hostname, PEM, and enum validators
- Apply input validation to all POST/PUT handlers (certificates,
agents, CSR, policies, teams, owners, targets, issuers)
- Fix unchecked JSON decode in TriggerDeployment handler
Frontend (Vite + React + TypeScript):
- Migrate from single-file SPA to proper build pipeline
- 7 pages: Dashboard, Certificates (list+detail), Agents, Jobs,
Notifications, Policies, Audit Trail
- TanStack Query for server state with auto-refetch intervals
- Certificate detail with version history and renewal trigger
- Job cancellation, status/type filtering, expiry countdowns
- Reusable components: DataTable, StatusBadge, ErrorState, PageHeader
- Dark theme with Tailwind CSS, sidebar nav via React Router
Server integration:
- Go server serves web/dist/ (Vite output) with SPA fallback
- Falls back to web/index.html for legacy mode
- .gitignore updated for web/node_modules/ and web/dist/
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
shankar0123