feat: Organize context files and enhance documentation for clarity and structure

.opencode/commands/promote-project-context.md

@@ -7,7 +7,11 @@ Use this only when you want an explicit manual promotion pass.
 Read:
 
 @ai/AGENTS.md
+@ai/context/index.md
 @ai/context/project.md
+@ai/context/systems/index.md
+@ai/context/workstreams/index.md
+@ai/context/process/index.md
 @ai/state/current.md
 @ai/state/work-items.md
 @knowledge/workspace-model.md
@@ -39,6 +43,9 @@ Instructions:
   - `ai/state/current.md`
   - `ai/state/work-items.md`
   - `ai/context/project.md`
+  - `ai/context/systems/*.md`
+  - `ai/context/workstreams/*.md`
+  - `ai/context/process/*.md`
   - `ai/context/decisions/*.md`
 - Prefer concrete project updates over broad summaries
 - If a fact is still ambiguous, do not promote it