docs: add AGENTS.md and fix agent role defs for deno-first project

- Add AGENTS.md with project overview, conventions, commands, and heritage notes
- Fix all npm→deno command references in coordinator, implementation-specialist, poc-specialist
- Fix project name in coordinator spawn template (@alkdev/operations→@alkdev/storage)
- Remove hub-specific content (future model, hub operations) from coordinator
- Add project-specific conventions to implementation-specialist (no comments, TypeBox, slow types, etc.)
- Add deno-specific review checks to code-reviewer
- Fix file path examples in implementation-specialist (packages/core→src/graphs)
- Update sdd_process.md to remove hub-specific references and architecture doc list
- Update architect examples to use storage component names

docs/sdd_process.md

@@ -2,10 +2,10 @@
 
 ## Overview
 
-This document defines the SDD process for the alk.dev project. It leverages:
-- **Operation registry + call protocol** for typed, composable tool invocation
-- **Hub coordination operations** (`coord.spawn`, `coord.status`, `coord.message`, etc.) for parallel worktree/session orchestration
-- **OpenCode CLI** as the agent execution environment (via the open-coordinator plugin as stopgap, transitioning to native hub operations)
+This document defines the SDD process for the @alkdev/storage package. It leverages:
+- **OpenCode CLI** as the agent execution environment
+- **Open-coordinator plugin** for worktree management and parallel session orchestration
+- **Structured task graphs** with dependency analysis and safe exit protocols
 
 ## Core Principles
 
@@ -473,29 +473,16 @@ State moves from in-process tracking to Postgres `mappings` table. The open-coor
 
 docs/
 ├── architecture/
-│   ├── hub-architecture.md
-│   ├── call-graph.md
-│   ├── spoke-runner.md
-│   ├── operations.md
-│   ├── mcp-server.md
-│   ├── coordination.md
-│   ├── storage/                  # Decomposed: README.md, table-reference.md, per-domain schema files, tasks.md
-│   │   └── (ADRs in decisions/)
-│   ├── agent-sessions.md
-│   ├── pubsub-redis.md
-│   └── infrastructure.md
+│   └── storage/                  # Decomposed: README.md, table-reference.md, per-domain schema files
+│       └── (ADRs in decisions/)
 ├── sdd_process.md             # This document
 └── decisions/                 # ADRs
 
 tasks/
 ├── architecture/
-│   └── auth-design.md
+│   └── ...
 ├── implementation/
-│   ├── storage/
-│   │   ├── tasks-table.md
-│   │   └── migrations.md
-│   └── auth/
-│       └── oauth-flow.md
+│   └── ...
 └── (taskgraph validates & analyzes dependency graph)
 
 .worktrees/                    # Created by coordinator