Task: Add structure kinds and templates

Table of Contents

This page documents a task in the Model trade structures story. It captures the goal, current status, acceptance, and any notes or results.

1. Goal

The kinds of structure and the templates that constrain their legs are reference data.

2. Status

Field Value
State DONE
Parent story Model trade structures
Now Nothing.
Waiting on Nothing.
Next Nothing.
Last touched 2026-10-05

3. Acceptance

  • structure_kind is an immutable lookup seeded with strategy, typed, dynamic and package, each stating whether it confirms as a whole.
  • structure_template names its kind and its roles with minimum and maximum leg counts, seeded for the common strategies.

4. Plan

(Implementation strategy. Written when work starts; key decisions are distilled into the parent story's * Decisions at close, but the plan itself stays — it is the historical record of what we did.)

5. Measurements

Every number this task claims about a tree, with the command that produced it and the commit it was measured at. A number without both is not a measurement, because a clean-up record describes a tree and trunk moves under a branch: a consumer count, a gate's component count and a suite's size all change with no code changing, and the reader of a bare number cannot tell which tree it came from. Where the raw output matters, put it in an evidence/ file beside the task and name that file in the Command column.

What Value Command Commit
static checks on this branch 5 of 5 pass compass check --only handler-permissions --only create-reachability --only model-drift --only sql-hygiene --only populate-refs 62a88df679
create files the reachability check reports unreachable 0 check_sql_create_reachability.py 62a88df679
permission codes the handler check reports unseeded 0, from 15 check_handler_permissions.py 62a88df679

6. Notes

7. Test Scenarios

Manual QA scenarios (scaffolded via compass add test_scenario) that verify this task. Link new ones here as they're created; the scenario doc itself links back via its "Verifies task" field.

Scenario State Notes
     

8. PRs

PR Title
#2822 [trading] Add the structure kinds and templates

9. Review

Comment summary File Decision Notes
       

10. Result

structure_kind states the four rungs of the composition ladder and which of them confirms as a whole. structure_template names its kind from that catalogue, and structure_template_role states each role's leg counts, with the counts checked and a maximum of zero meaning no upper bound.

The seed carries the four rungs, the four common strategies the composition page names plus one typed product, and nine role rows. The nine handler permissions are seeded too, which the previous task's entities were missing.

The task closed on static validation alone, with its nine pgTAP cases written and never executed, and the seed data verified only by inspection. A follow-up ran them against a rebuilt database: all nine pass, so the seed and the template and role constraints are now proven by execution.

No build and no ctest ran on this task. The hourly build and test on main belongs to swift curie.

Emacs 29.3 (Org mode 9.6.15)