Add workflow documentation for auth implementation

Include surgical instructions and code review feedback
from authentication feature development.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 29 insertions, 0 deletions

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+# Review Cycle 2025-05-20
+
+## Status: [NEEDS_FIX]
+
+## Critical Issues (Blocking)
+
+1.  **Missing Tests for Auth Package:**
+    *   The `internal/auth` package has no unit tests.
+    *   **Action:** Create `internal/auth/auth_test.go` and `internal/auth/handlers_test.go` to verify logic (hashing, session management, etc.).
+
+2.  **Missing CSRF Protection:**
+    *   The login form uses POST but lacks a CSRF token. While `SameSite=Lax` helps, it is not a complete defense.
+    *   **Action:** Integrate a CSRF middleware (e.g., `justinas/nosurf` or similar) or manually implement CSRF token verification for state-changing requests.
+
+3.  **Acceptance Tests Outdated:**
+    *   `test/acceptance_test.go` sets up the server manually and bypasses the new authentication middleware.
+    *   **Action:** Update `setupTestServer` in `test/acceptance_test.go` to include the auth middleware and mock the session/auth flow so tests can pass with the new security layer.
+
+## Clean Code Suggestions (Non-Blocking)
+
+1.  **File Renaming:**
+    *   `cmd/dashboard_main.go` was correctly identified as needing a rename. I have performed this rename to `cmd/dashboard/main.go`.
+    *   **Action:** Ensure future edits target `cmd/dashboard/main.go`.
+
+## Praise
+
+*   **Solid Auth Implementation:** The `internal/auth` package is well-structured and easy to read.
+*   **Secure Defaults:** Good use of `bcrypt` for hashing and `scs` for session management with `RenewToken` to prevent session fixation.
+*   **Clean Architecture:** The separation of concerns between Service, Handlers, and Middleware is excellent.