## User
- **User:** Howard Enos (howard)
- **Machine:** Howard-Home
- **Role:** tech

## Session Summary

Howard flagged a Syncro billing defect on his invoice list (invoice 1650806091 view): "Windows Pro Upgrade" line items on Cascades of Tucson tickets #32466 and #32474 (invoices 67887 and 67890) went out with a blank CATEGORY column, while labor lines correctly showed "Labor". The directive was explicit — do NOT fix the ticket (Winter already corrected the records); fix the skill so I stop making this mistake, since categories are a fixed set in Syncro and must not be invented or left blank.

Investigated the root cause read-only via the Syncro REST API. Located the product "Windows Pro Upgrade" (id 23571919) and confirmed both `category` and `product_category` are `null` on the product itself — that null propagates to every line item billed from it, producing the blank CATEGORY column. Confirmed `product_category` is the operative field (the field that shows "Labor" on labor products like 1190473). Enumerated the controlled vocabulary by paging all ~960 products: real categories in the tenant are Labor, Default, Subscriptions, Product, Service/Services, Other, Contract, Discount, Exempt Labor, Prepay Hours, Deposit, Hardware (plus Software per Howard's set selections). The `/product_categories` API endpoint returned empty, so the live set must be derived by enumerating distinct `product_category` across `GET /products`.

Fixed the skill rules only (no ticket/product writes). Added a controlled-vocabulary rule and a pre-flight check to `.claude/commands/syncro.md`, created a `feedback` memory with an index line, and logged the correction to `errorlog.md`. The net behavioral change: before invoicing, the `/syncro` flow must `GET /products/<id>`, verify `product_category` is a real non-null value, halt on a blank one, and never substitute an invented category.

## Key Decisions

- Fixed the skill at two layers: the bolded rules block (next to the `taxable` rule) AND the `add_line_item` required-fields procedure, so the check sits in the workflow, not just the header.
- Did not hardcode the category list as authoritative — instructed the skill to enumerate the live set from `GET /products` (it changes), with known-good values listed only as a reference and "ASK if none fits."
- Targeted the line-item/invoicing path (where I act) rather than product creation — the skill does not create products, and the product-level fix is Winter's record correction.
- Wrote a `feedback`-type memory (shapes future behavior fleet-wide) in addition to the errorlog correction (pattern-linting), per the complementary-logging rule.

## Problems Encountered

- `/product_categories` API endpoint returned empty — resolved by enumerating distinct `product_category` across all paged `GET /products` to recover the controlled vocabulary.
- Product exposes several category-ish fields (`category`, `product_category`, `category_id`, `category_path`) — confirmed `product_category`/`category_path` are the populated ones (both "Labor" on a labor product) and `product_category` is the canonical field to check.

## Configuration Changes

- Modified: `.claude/commands/syncro.md` — added controlled-vocabulary + no-blank-category rule (after the taxable rule); added category pre-flight to the `add_line_item` required-fields list.
- Created: `.claude/memory/feedback_syncro_line_item_category.md` — feedback memory for the rule.
- Modified: `.claude/memory/MEMORY.md` — added index line for the new memory.
- Modified: `errorlog.md` — logged the correction (--correction).

## Credentials & Secrets

None created or discovered. Used the per-user Syncro API key already baked into `.claude/commands/syncro.md` (howard token) for read-only GETs.

## Infrastructure & Servers

- Syncro PSA: `https://computerguru.syncromsp.com/api/v1` — query-param auth (`?api_key=`).

## Commands & Outputs

- `GET /products?query=Windows%20Pro%20Upgrade` → product id 23571919, `product_category: null`, `price_retail: 99.0`, `taxable: true`.
- `GET /products/1190473` (Labor - Remote Business) → `product_category: "Labor"` (confirms the field that renders the CATEGORY column).
- Paged enumeration of all products → distinct `product_category`: Labor, Default, Subscriptions, Product, Service(s), Other, Contract, Discount, Exempt Labor, Prepay Hours, Deposit, Hardware (+ Software per Syncro admin set).
- `bash .claude/scripts/log-skill-error.sh "/syncro" "..." --correction` → `[OK] logged skill error to errorlog.md`.

## Pending / Incomplete Tasks

- None for the skill fix. (Ticket/product record correction is Winter's, already done — invoices 67887/67890, product 23571919.)
- Optional future: the product 23571919 `product_category` should be set to "Software" at the product level so future bills inherit it — outside this session's scope (Winter handling records).

## Reference Information

- Tickets: Cascades of Tucson #32466, #32474. Invoices: 67887, 67890. Invoice list view: invoice 1650806091.
- Product: "Windows Pro Upgrade" id 23571919.
- Files: `.claude/commands/syncro.md`, `.claude/memory/feedback_syncro_line_item_category.md`, `.claude/memory/MEMORY.md`, `errorlog.md`.
