docs(playability): inventory legacy user workflows

[blakinio]

Purpose

Inventory player-visible legacy workflows and convert them into reusable functional parity scenarios without importing Lua/OTUI architecture into the Rust client.

Deliverables

• evidence-backed legacy user workflow inventory;
• M1-M6 parity scenario catalogue with start states, actions, observables, negatives and evidence classes;
• completed task/checkpoint.

Key result

Core playability, core gameplay, daily product and exact-profile feature families are separated. Legacy globals, OTUI widget IDs, module boundaries, password fallback, proprietary content and automation are explicitly not parity requirements. Exact-profile scope remains conditional on Canary evidence and product classification.

Safety

Implementation is not authorized. No legacy/Rust source, proprietary asset/binary, PR #23 path or official-service automation.

Exact-head validation

Clean restacked head 346d1bd8513fbe635873303b2818848ef3b2e489 is one commit on main@6007a5dfe2cfcf7429c7ef999b51f37244b21d0c and passed:

• Rust Client run 30712144007;
• Windows job 91401340297: locked metadata, rustfmt, strict Clippy, complete workspace tests and architecture validation;
• Supply Chain job 91401340276;
• repository CI run 30712144118;
• CI / Required job 91401454738;
• exact changed-file review: three owned documentation paths;
• comments, reviews and unresolved review threads: none.

Task

OTC2-20260801-playability-p0-legacy