== Phase 01 current block ==
   601	### Phase 01 - Overview & Scope
   602	Authority set:
   603	- master_architecture_index.md
   604	- project_scope_canonical.json
   605	
   606	Supporting context:
   607	- devon_panel_chat_checkpoint.md
   608	
   609	### Phase 02 - Architecture & Engineering Canon
   610	Authority files:
   611	- cas.md
   612	- cgs.md
   613	- acs.md
   614	- css.md
   615	- ncs.md
   616	- sts.md
   617	- brps.md
   618	- cdms.md
   619	
   620	Satellite files:
   621	- ris.md
   622	- ofms.md
   623	
   624	#### Phase 02 Process-Spec

== Canonical hierarchy rule ==
  1450	### Canonical Navigation and Execution Hierarchy
  1451	
  1452	The canonical hierarchy for Devon documentation, execution mapping and panel rendering is:
  1453	
  1454	1. Phase
  1455	2. Category
  1456	3. Subcategory
  1457	4. Bucket
  1458	5. Item
  1459	
  1460	#### Subcategory
  1461	A Subcategory is the process-oriented subdivision inside a Category.
  1462	
  1463	Subcategories are additive organizational layers and do not replace Phase or Category sovereignty.
  1464	
  1465	Canonical subcategories are:
  1466	- Prerequisites
  1467	- Installation
  1468	- Configuration
  1469	- Validation
  1470	- Observable Evidence
  1471	- Failure Modes & Recovery
  1472	- Completion & Promotion
  1473	
  1474	#### Bucket
  1475	A Bucket is a grouped execution container inside a Subcategory.
  1476	
  1477	Buckets belong to a Subcategory and may not be attached directly to a Phase.
  1478	
  1479	#### Item
  1480	An Item is the smallest executable process unit inside a Bucket.
  1481	
  1482	Items belong to a Bucket and represent the lowest executable unit in the canonical workflow model.
  1483	
  1484	#### Structural Adaptation Rule
  1485	The existing sovereign structure remains valid:
  1486	
  1487	- Phase remains the primary macro execution layer
  1488	- Category remains the second-level sovereign document grouping
  1489	
  1490	The hierarchy is extended, not replaced:
  1491	
  1492	- Phase
  1493	- Category
  1494	- Subcategory
  1495	- Bucket
  1496	- Item
  1497	
  1498	Rendering contract:
  1499	
  1500	- left navigation = Phase -> Category
  1501	- center workflow = Subcategory -> Bucket -> Item
  1502	
  1503	Subcategories must not be promoted to primary left navigation unless a future canonical navigation contract explicitly changes that rule.

== Category definition ==
  1515	#### Category
  1516	A Category is a sovereign or supporting document group inside a selected Phase.
  1517	Examples inside a phase:
  1518	- Master Architecture Index
  1519	- Panel Manifest
  1520	- Project Scope Canonical
  1521	- Contracts and Schemas
  1522	- Governance Model
  1523	
  1524	Rule:
  1525	a category is not the phase itself.