feat(hooks): dsh-hooks-claude + dsh-hooks-codex bridges (hooks stack PR-F)

The two bridge plugins that run a user's existing Claude Code / Codex hook
config on the harness's typed interception seams, built on the shared
dsh-hook-protocol library. A bridge is a faithfulness adapter, not a power
tool: anything it does a native cordis plugin does more powerfully — the
bridge exists only to run UNMODIFIED external hooks.

- dsh-hooks-claude: CC dialect. Seven hook points (SessionStart,
  UserPromptSubmit, PreToolUse, PostToolUse, Stop, SubagentStart,
  SubagentStop), CC per-event stdin payloads, env + ${CLAUDE_PLUGIN_ROOT}/
  ${CLAUDE_PROJECT_DIR} substitution, literal-or-regex matcher.
- dsh-hooks-codex: Codex dialect — a deliberate subset. Five hook points,
  always-regex matcher, snake_case payloads (turn_id/model, no trailing
  newline), no env/substitution, block-only decisions.

Both map the neutral merged outcome onto the seam's typed Decision and stamp
an explicit {kind:'plugin'} source on injected context (so it is never
mislabeled as a user prompt). Config parse-failure is contained; only command
hooks run. updatedInput is logged+warned (input rewrite deferred); the Stop
loop-guard is deferred (TODO).

Tests: per-file 100% — config-parse unit branches + per-seam mappings
end-to-end through the REAL loop + REAL bash + REAL shell scripts (scripted
mock model only) + a real-Loader export-shape guard. A keyless ACP snapshot
scenario (hook-prompt-block) proves a UserPromptSubmit hook blocks a prompt
end-to-end (rejected turn -> ACP cancelled, hook/* events in the log); a
with-key e2e (hooks.e2e.ts) proves a PreToolUse hook blocks real bash
(verified on disk). The snapshot normalizer now scrubs hook/result.durationMs.

RFC: docs/rfc/implemented/feature/2026-06-30-hook-bridges.md

docs/module-graph.md

@@ -49,6 +49,11 @@ graph TD
   agent-loop --> session-persistence
   agent-loop --> system-prompt
   agent-loop --> tools
+  hooks-codex --> agent
+  hooks-codex --> hook-protocol
+  hooks-codex --> llm
+  hooks-codex --> session
+  hooks-codex --> tools
   subagent --> agent
   subagent --> llm
   subagent --> tools
@@ -67,6 +72,12 @@ graph TD
   agent-core --> system-prompt
   agent-core --> tool-bash
   agent-core --> tools
+  hooks-claude --> agent
+  hooks-claude --> hook-protocol
+  hooks-claude --> llm
+  hooks-claude --> session
+  hooks-claude --> subagent
+  hooks-claude --> tools
   subagent-acp --> agent
   subagent-acp --> llm
   subagent-acp --> subagent
@@ -119,10 +130,12 @@ graph TD
 | `ui-stdio` | `agent`, `llm`, `session` |
 | `acp` | `agent`, `llm`, `session`, `session-persistence`, `tools` |
 | `agent-loop` | `agent`, `llm`, `session`, `session-persistence`, `system-prompt`, `tools` |
+| `hooks-codex` | `agent`, `hook-protocol`, `llm`, `session`, `tools` |
 | `subagent` | `agent`, `llm`, `tools` |
 | `tool-bash` | `agent`, `bash`, `llm`, `tools` |
 | `tool-todo` | `agent`, `session`, `tools` |
 | `agent-core` | `agent`, `agent-loop`, `invariants`, `llm`, `session`, `system-prompt`, `tool-bash`, `tools` |
+| `hooks-claude` | `agent`, `hook-protocol`, `llm`, `session`, `subagent`, `tools` |
 | `subagent-acp` | `agent`, `llm`, `subagent` |
 | `subagent-inprocess` | `agent`, `llm`, `session`, `subagent` |
 | `subagent-mock` | `agent`, `llm`, `subagent` |