diff --git a/docker/codex-workspace/cron/codex_cron_lib.bb b/docker/codex-workspace/cron/codex_cron_lib.bb
index fc5fe7c592..96d907ea72 100644
--- a/docker/codex-workspace/cron/codex_cron_lib.bb
+++ b/docker/codex-workspace/cron/codex_cron_lib.bb
@@ -3,7 +3,7 @@
             [clojure.edn :as edn]
             [clojure.string :as str]))
 
-(def default-root "/home/boxp/.codex-cron")
+(def default-root "/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron")
 (def default-registry "jobs.edn")
 (def default-state "jobs-state.edn")
 
diff --git a/docker/codex-workspace/cron/run-codex-cron.sh b/docker/codex-workspace/cron/run-codex-cron.sh
index 543f9f6470..c44304ea1b 100644
--- a/docker/codex-workspace/cron/run-codex-cron.sh
+++ b/docker/codex-workspace/cron/run-codex-cron.sh
@@ -7,7 +7,7 @@ if [[ -z "${job_id}" ]]; then
   exit 2
 fi
 
-cron_root="${CODEX_CRON_ROOT:-/home/boxp/.codex-cron}"
+cron_root="${CODEX_CRON_ROOT:-/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron}"
 
 eval "$(
   bb /opt/codex-workspace/cron/select-codex-cron-job.bb "${job_id}"
diff --git a/docker/codex-workspace/entrypoint.sh b/docker/codex-workspace/entrypoint.sh
index fe02cbe452..8213c8bd80 100644
--- a/docker/codex-workspace/entrypoint.sh
+++ b/docker/codex-workspace/entrypoint.sh
@@ -5,7 +5,7 @@ install -d -m 0755 /run/sshd
 install -d -o boxp -g boxp -m 0755 /home/boxp
 /usr/sbin/runuser -u boxp -- install -d -m 0700 /home/boxp/.ssh
 /usr/sbin/runuser -u boxp -- install -d -m 0755 /home/boxp/.codex/skills
-/usr/sbin/runuser -u boxp -- install -d -m 0755 /home/boxp/.codex-cron
+/usr/sbin/runuser -u boxp -- install -d -m 0755 "/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron"
 /usr/sbin/runuser -u boxp -- install -d -m 0755 /home/boxp/ghq
 
 if [[ -d /opt/codex-workspace/skills ]]; then
diff --git a/docker/codex-workspace/skills/codex-workspace-cron/SKILL.md b/docker/codex-workspace/skills/codex-workspace-cron/SKILL.md
index 1b7e6479ae..469d23b3a2 100644
--- a/docker/codex-workspace/skills/codex-workspace-cron/SKILL.md
+++ b/docker/codex-workspace/skills/codex-workspace-cron/SKILL.md
@@ -1,18 +1,18 @@
 ---
 name: codex-workspace-cron
-description: Manage Codex workspace scheduled prompt jobs stored under ~/.codex-cron. Use when the user asks to list, show, add, edit, enable, disable, delete, or manually run Codex cron jobs.
+description: Manage Codex workspace scheduled prompt jobs stored in the Obsidian vault. Use when the user asks to list, show, add, edit, enable, disable, delete, or manually run Codex cron jobs.
 ---
 
 # Codex Workspace Cron
 
 Use this skill to operate the Codex workspace prompt scheduler from inside the Codex workspace.
 
-The live scheduler reads and writes only the workspace home PVC:
+The live scheduler reads and writes only the Obsidian vault path on the workspace home PVC:
 
-- `/home/boxp/.codex-cron/jobs.edn`: job registry.
-- `/home/boxp/.codex-cron/prompts/*.md`: prompt bodies.
-- `/home/boxp/.codex-cron/jobs-state.edn`: scheduler bookkeeping.
-- `/home/boxp/.codex-cron/runs/<job>/<run-id>/`: run logs.
+- `/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron/jobs.edn`: job registry.
+- `/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron/prompts/*.md`: prompt bodies.
+- `/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron/jobs-state.edn`: scheduler bookkeeping.
+- `/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron/runs/<job>/<run-id>/`: run logs.
 
 ## Workflow
 
@@ -80,4 +80,4 @@ bb ~/.codex/skills/codex-workspace-cron/scripts/codex_cron_jobs.bb run daily-rep
 
 - Confirm schedule, prompt, and enabled state before turning a job on.
 - The scheduler supports standard 5-field cron expressions and polls every 30 seconds by default.
-- Do not edit Kubernetes CronJobs for individual schedules; the resident scheduler sidecar reads `~/.codex-cron/jobs.edn`.
+- Do not edit Kubernetes CronJobs for individual schedules; the resident scheduler sidecar reads the Obsidian vault `Codex Cron/jobs.edn`.
diff --git a/docs/project_docs/codex-cron-obsidian-root/plan.md b/docs/project_docs/codex-cron-obsidian-root/plan.md
new file mode 100644
index 0000000000..43b5195767
--- /dev/null
+++ b/docs/project_docs/codex-cron-obsidian-root/plan.md
@@ -0,0 +1,17 @@
+# codex-cron-obsidian-root: Codex cron root を Obsidian vault に寄せる
+
+## Goal
+
+Codex workspace cron の source of truth を `~/.codex-cron` symlink ではなく、Obsidian vault 上の実体 `/home/boxp/Documents/obsidian-headless/BOXP/Infrastructure/Codex Cron` にする。
+
+## Plan
+
+1. `docker/codex-workspace/cron/codex_cron_lib.bb` の default root を Obsidian vault path に変更する。
+2. `docker/codex-workspace/cron/run-codex-cron.sh` の fallback root も同じ path に変更する。
+3. `docker/codex-workspace/entrypoint.sh` では `~/.codex-cron` を作らず、Obsidian vault path を作成する。
+4. bundled `codex-workspace-cron` skill の説明を vault path 前提に更新する。
+
+## Validation
+
+- `bash -n docker/codex-workspace/entrypoint.sh docker/codex-workspace/cron/run-codex-cron.sh`
+- `bb docker/codex-workspace/skills/codex-workspace-cron/scripts/codex_cron_jobs.bb list`