Design the idiomatic Elixir architecture for a rewrite: set the compatibility bar (ADR-000), consult phx specialists on open questions, then build contexts, ledger and ADRs. Use after /rewrite:analyze.
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What the file says
# Rewrite Architect — Compatibility Bar, Then Design
Phase 2. First decide **what must stay compatible** (ADR-000), then design
the Elixir system that meets the goals inside that bar. The bar comes first
because "idiomatic" and "compatible" pull in different directions, and only
the user can trade them.
```text
/rewrite:analyze → /rewrite:architect <-- YOU ARE HERE
↓
/rewrite:roadmap → /phx:plan → /phx:work → /rewrite:verify
```
## Iron Laws
1. **ADR-000 BEFORE ANY DESIGN** — never spawn the architect without an accepted or ASSUMED bar
2. **THE USER OWNS TRADE-OFFS** — cutover mode, forced logouts, schema changes and UI changes are asked, never inferred
3. **CONSULT BY QUESTION** — spawn a phx specialist only for a named open question, with an evidence packet
4. **LEDGER MUST CHECK CLEAN** — run `ledger.py check` and fix or report every error before presenting
5. **ASSUMED IS NOT APPROVED** — `--auto` decisions stay `ASSUMED` until the user accepts them
6. **SPAWN FROM THIS SESSION** — agents never spawn phx orchestrators (nesting depth)
## Workflow
### 1. Preconditions
…
The line at the top of this page pins the label git:20261016.60a2294, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_bxlkp45awh5vnsaf
GET https://markdownregistry.com/api/v1/resolve?ref=oliver-kriska/claude-elixir-phoenix/architect
GET https://markdownregistry.com/api/v1/blob/19b4357fe718b2ec3ef9b3d7432dda6c3e51cd313714e14d8f44f02f4ba1ba22
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