RestClient::Forbidden: 403 Forbidden

I'll start by reading the cluster file and invoking the rca skill.

This is an Error Tracking issue. Per the special instructions, the Representative Error ("403 Forbid

Status board: `svc:` scope, no active incident. Proceed with normal RCA. The recent incidents are fr

The last_seen is 2026-07-10, which is more than 14 days before today (2026-08-04), so Datadog log re

0 logs — as expected, last_seen (2026-07-10) is outside the 14-day retention window (today is 2026-0

Interesting. There are two distinct sources of "Forbidden" in the current window:

The dominant error-level `Forbidden` source in the current window is `Cupix::NotificationService#sub

Repo is `/home/ec2-user/repos/tesla`. Let me find the NotificationService#subscribe code and get mor

Found it. `subscribe` (line 70-93) makes a PUT to the notification service `/api/v1/subscriptions` w

The trigger: when a `FacilityPermission` is created for a User, a pub/sub subscriber (`SubscriptionG

Confirmed: 403 is NOT in the retriable set, so `RestClient::Forbidden` propagates up immediately and

The route uses a Lambda authorizer (`event.requestContext.authorizer.lambda`). The 403 comes from th

Two possible 403 sources on `PUT /api/v1/subscriptions`:

Clear now. The authorizer validates the `x-cupix-auth` token by calling tesla's `/api/v1/me`. If the

The `@class`/`@function` tag query returns 0 (older code doesn't tag), but the keyword query earlier

A significant spike: 100+ error-level `Cupix::NotificationService` (subscribe) 403 logs on **2026-08

Critical finding — the recent burst is a DIFFERENT error than both the representative "403 Forbidden

`service_jwt` is NOT in the current checked-out tesla branch, and `NotificationService` uses `@user.

There ARE commits referencing `service_jwt`: `a6a535e8d TSLA-13082 Recipe creation failed` and `54f4

This is the root cause. The rubocop fix commit `54f4417c2` added:

Confirmed the exact bug. In this branch:

Fully confirmed. Now let me verify merge status (is this on develop/master?) and check the current f

Important nuance: the buggy commit IS on `develop` but NOT on `master` (production). Yet the errors

Now the full picture is clear:

I have all evidence. Confirmed the bug: on `origin/develop`, `create_user_recipe:20` calls `self.cla

Report written. Per instructions, I will NOT modify the cluster frontmatter (pipeline manages `statu

RCA complete. Report written to `content/docs/incidents/6312f4e9-203e-4dca-8187-1abb9316cb2b/rca.mdx

RCA complete.

I'll start by loading the code-fix skill and consulting my memory.

Let me check for existing state and read the key inputs.

No existing state — starting from Phase 0. Let me read the cluster file and RCA report.

Note: `resolution` field isn't present in frontmatter but `status: approved`. Let me read the RCA re

This is a clear, trivial bug. Root cause: `private_class_method :service_jwt` breaks the `self.class

There's already an episode file for this exact cluster ID. Let me read it and the service memory.

This episode is from the RCA phase (no fix info yet — no PR/Jira). Let me check the cupixworks-api s

Key memory insights for this task:

tesla, base branch `develop`. Now let me read the templates and check environment variables.

Now let me verify the actual code in the tesla develop branch before planning. First check REPOS_DIR

Let me inspect the actual file on origin/develop to confirm the code state before planning.

Confirmed: line 20 uses `self.class.service_jwt`. Now let me see the `service_jwt` definition and th

Let me view lines 205-243 to see the full definitions and how `find_or_create_internal_user` is call

Now the picture is clear:

Confirmed the introducing diff. No spec exists for notification_service.

I have full understanding. The fix design:

Found 1 relevant past episode (this cluster's own RCA episode). Complexity: **TRIVIAL** (1 file, 1 l

Now Phase 2 — write the plan.

Phase 3 — create Jira issue. Read the jira template.

Let me update state Jira row to in-progress and read the release-state next version.

Now create the Jira issue.

Created TSLA-13863. Now update its description with the full RCA and add the web link.

Update state with jira_issue, branch, phase.

Phase 4 — create the worktree. tesla is not a monorepo (no sparse checkout). Base branch `develop`.

Now apply worktree setup (copy `.env`). This is a 1-line rubocop-scope fix; I only need rubocop, not

rubocop works (gems shared via the source repo's bundle). No `.env` in source (fine — not needed for

Phase 5 — implement. Let me read the exact line in the worktree and edit.

Now validate: `ruby -c` and `bundle exec rubocop` on the changed file. Per memory, do NOT run rspec.

Important finding: rubocop reports `Lint/IneffectiveAccessModifier` on `def self.service_jwt` (line

So after `private` (line 131) there are instance methods, then the two `def self.` class methods (`s

I have two options to make `service_jwt` a public class method without the rubocop offense:

`public_class_method` doesn't silence the cop — it still flags the `def self.service_jwt` under the

Now the file is back at develop state (both private). The cleanest approach that satisfies both runt

I'll relocate the two class methods to just before the `private` keyword (after line 129, before lin

Now insert the two class methods before the `private` keyword:

Now `service_jwt` is a public class method (defined before `private`), `find_or_create_internal_user

Still 1 offense but now autocorrectable. Let me see what it is.

Just an extra empty line at class end from my removal edit — the `IneffectiveAccessModifier` is gone

Clean: no rubocop offenses, syntax OK. `service_jwt` is now public (callable via `self.class.service

srb tc passes. Now commit the change.

Committed (pre-commit rubocop hook passed). Update state and the plan (the fix approach evolved: rel

Now update state: implement done, phase validating, record metrics.

Also record the `Lint/IneffectiveAccessModifier` regression discovery in Decisions.

Phase 6 — blind validation subagent. Read validator agent + validation template, collect the diff.

Collect the diff for the subagent.

Now launch the blind validator subagent. Let me load the Agent tool.

Validation APPROVED. Let me verify the file was written and record metrics.

APPROVED. Update state metrics and phase.

Phase 7 — create PR. Read the PR template first.

This is an Azure DevOps repo. Push and create PR. The commit is already made; push the branch.

Branch pushed. The remote URL uses `dev.azure.com/cupix/tesla` format. Let me create the PR with pro

The skill's example uses `cupix.visualstudio.com/DefaultCollection` org URL, but the remote is `dev.

The org is `https://dev.azure.com/cupix`, project `tesla`, repo `tesla`, target `develop`. Create th

PR #89504 created. Web URL: `https://dev.azure.com/cupix/tesla/_git/tesla/pullrequest/89504`. Update

Now update the cluster file resolution. Per memory, `resolution` field is immutable to the agent (Pr

No `resolution` field in the cluster file (it uses `status`/`resolved_at`). Per memory, the `resolut

Now update service memory with the reusable rubocop lesson.

Now the summary.mdx. Read the template.

Now finalize state.mdx reflection row and record the outcome.

All phases complete. Summary: