feat: add Devin agent type

README.ja.md

@@ -210,7 +210,7 @@ codex:
   --dangerously-skip-permissions: false  # `false`の値はフラグ自体を出力しない
 ```
 
-9種類のエージェントタイプのうち8つがspawn可能 — `claude-code`、`codex`、`grok-build`、`cursor`、`gemini`、`antigravity`、`copilot`、`opencode`。`hermes` は不可 — そのCLIには初期プロンプトを事前に仕込んだインタラクティブセッションを開始するモードがない（#279）。macOSが主なターゲットで、LinuxとWindowsはベストエフォート（ターミナルが未対応の場合はissueまたはPRを歓迎）。ヘッドレス環境 — tmuxもなく使えるターミナルもない — はエージェントCLIがインタラクティブなターミナルを必要とするためエラーになる。
+10種類のエージェントタイプのうち8つがspawn可能 — `claude-code`、`codex`、`grok-build`、`cursor`、`gemini`、`antigravity`、`copilot`、`opencode`。`hermes` は、初期プロンプトを事前に仕込んだインタラクティブセッションを開始する既知のCLIモードがないためspawn不可（#279）。`devin` は、同等のインタラクティブ起動方法がまだ検証されていないため、現時点ではspawnableとして扱っていない。macOSが主なターゲットで、LinuxとWindowsはベストエフォート（ターミナルが未対応の場合はissueまたはPRを歓迎）。ヘッドレス環境 — tmuxもなく使えるターミナルもない — はエージェントCLIがインタラクティブなターミナルを必要とするためエラーになる。
 
 ### spawnしたエージェントを終了する（`despawn`）
 

README.md

@@ -211,7 +211,7 @@ codex:
   --dangerously-skip-permissions: false  # a `false` value suppresses the flag entirely
 ```
 
-Eight of the nine agent types are spawnable — `claude-code`, `codex`, `grok-build`, `cursor`, `gemini`, `antigravity`, `copilot`, `opencode`. `hermes` is not: its CLI has no mode that starts an interactive session pre-seeded with an initial prompt (#279). macOS is the primary target; Linux and Windows are best-effort (please open an issue/PR if your terminal isn't handled). Headless environments — no tmux **and** no usable terminal — error out, since the agent CLIs need an interactive terminal.
+Eight of the ten agent types are spawnable — `claude-code`, `codex`, `grok-build`, `cursor`, `gemini`, `antigravity`, `copilot`, `opencode`. `hermes` is not spawnable because its CLI has no known mode that starts an interactive session pre-seeded with an initial prompt (#279). `devin` is currently not marked spawnable because an equivalent interactive boot mode has not yet been verified. macOS is the primary target; Linux and Windows are best-effort (please open an issue/PR if your terminal isn't handled). Headless environments — no tmux **and** no usable terminal — error out, since the agent CLIs need an interactive terminal.
 
 ### Tear down a spawned agent (`despawn`)
 

docs/agent-types.md

@@ -1,7 +1,7 @@
 # Agent types
 
 agmsg supports several agent runtimes — claude-code, codex, gemini, antigravity,
-copilot, opencode, hermes, cursor — and each is described by a small **manifest** so that the rest
+copilot, opencode, hermes, cursor, devin — and each is described by a small **manifest** so that the rest
 of agmsg (detection, the join whitelist, spawn, and delivery routing) discovers it
 from data instead of hardcoded `case` arms.
 

install.sh

@@ -103,7 +103,7 @@ AGENT_TYPE=""  # claude-code, codex, gemini, antigravity — passed via --agent-
 # cursor) that had already drifted from the other two -- re-detecting one of
 # those three types as "codex" and then, via the template pick, overwriting
 # the SKILL.md the installer itself had written with the wrong flavor.
-AGMSG_SHARED_SKILL_TPL_TYPES="gemini antigravity opencode hermes cursor grok-build"
+AGMSG_SHARED_SKILL_TPL_TYPES="gemini antigravity opencode hermes cursor grok-build devin"
 
 configure_codex_sandbox() {
   # --- Configure Codex sandbox (if Codex is installed) ---
@@ -219,7 +219,7 @@ while [[ $# -gt 0 ]]; do
       echo "Options:"
       echo "  --cmd <name>      Command & skill folder name (default: agmsg)"
       echo "                    Claude Code: /<cmd>, Codex/Gemini/Antigravity: \$<cmd>"
-      echo "  --agent-type <t>  Agent type: claude-code, codex, gemini, antigravity, opencode, hermes, cursor, grok-build"
+      echo "  --agent-type <t>  Agent type: claude-code, codex, gemini, antigravity, opencode, hermes, cursor, grok-build, devin"
       echo "                    Selects which template becomes SKILL.md (matches the"
       echo "                    <type> arg passed to join.sh / whoami.sh)"
       echo "  --update          Update skill scripts only (preserve DB and teams)"

scripts/drivers/types/devin/_delivery.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+# devin delivery plug — manual inbox checks only.
+#
+# Devin has no agmsg automatic delivery hook: the only valid mode is `off`
+# (enforced by delivery_modes=off in the manifest, which the central gate in
+# delivery.sh checks). These overrides keep apply / status / teardown from
+# touching a hook file or another agent type's watchers. Sourced into
+# delivery.sh's context.
+
+# Nothing to write — manual-only, so no hooks_file is resolved or created.
+agmsg_delivery_apply() { :; }
+
+# No hook file to read; the mode is always off.
+agmsg_delivery_status() { echo "mode: off"; }
+
+# No watcher or bridge of our own. Do NOT fall through to the default teardown
+# (which stops this project's watch.sh) — another agent type may hold a live
+# watcher on the same project, and a devin `set off` must not disturb it.
+agmsg_delivery_on_disable() {
+  echo "Devin has no agmsg automatic delivery hook; manual inbox checks only."
+}