diff --git a/src/ClaudeDo.Data/CLAUDE.md b/src/ClaudeDo.Data/CLAUDE.md
index 09c1d99c..1cafe53e 100644
--- a/src/ClaudeDo.Data/CLAUDE.md
+++ b/src/ClaudeDo.Data/CLAUDE.md
@@ -14,7 +14,7 @@ Shared data layer: models, repositories, SQLite infrastructure, and git operatio
 - **ListConfigEntity** — ListId (PK, 1:1), Model, SystemPrompt, AgentPath, MaxTurns, SessionSkills, VerifyCommand (all nullable). `VerifyCommand` is an optional post-merge gate; null/blank = no gate → [review-merge](../../docs/explore-notes/review-merge.md).
 - **WorktreeEntity** — TaskId (PK, 1:1), Path, BranchName, BaseCommit, HeadCommit, DiffStat, MergeCommit (nullable — SHA of the merge commit this branch produced; the only thing making `revert_merge` possible without searching `git log`), State (`Active|Merged|Discarded|Kept`)
 - **TaskRunEntity** — per-run record: session_id, turns, result, structured output, exit code, log path, nullable `Model` (what the run actually executed with), and `TokensIn`/`TokensOut`/`CacheReadTokens`/`CacheWriteTokens`. ⚠️ Token fields come from the **session transcript**, not the stream-json event, as a per-run delta → [usage-monitoring](../../docs/explore-notes/usage-monitoring.md).
-- **PrimeScheduleEntity** — Id, Days (`[Flags] PrimeDays` weekday bitmask, column `days_of_week`), TimeOfDay, Enabled, LastRunAt, PromptOverride, CreatedAt. Recurs on selected weekdays; no date range.
+- **PrimeScheduleEntity** — Id, Days (`[Flags] PrimeDays` weekday bitmask, column `days_of_week`), TimeOfDay, Enabled, LastRunAt, PromptOverride, Kind (`PrimeActionKind`, column `action_kind`, default `ping`), CreatedAt. Recurs on selected weekdays; no date range. `PromptOverride`'s role depends on `Kind`: ignored for `Ping`, appended to the daily-prep prompt for `FillMyDay`, and the entire prompt for `Custom`.
 - **DailyNoteEntity** — Id, Date (DateOnly), Text, SortOrder, CreatedAt → `daily_notes`
 - **WeekReportEntity** — Id, StartDate/EndDate (DateOnly), Markdown, GeneratedAt → `week_reports`, unique index on (start_date, end_date)
 - **TaskAttachmentEntity** — Id, TaskId (FK, ON DELETE CASCADE), FileName, ByteSize, CreatedAt → `task_attachments`
diff --git a/src/ClaudeDo.Ui/CLAUDE.md b/src/ClaudeDo.Ui/CLAUDE.md
index 1b7f5a78..7359ae01 100644
--- a/src/ClaudeDo.Ui/CLAUDE.md
+++ b/src/ClaudeDo.Ui/CLAUDE.md
@@ -54,7 +54,7 @@ Design/         — Tokens.axaml (design tokens; merged before styles)
 
 | VM | Notes |
 |---|---|
-| `SettingsModalViewModel` | Four tabs: General, Worktrees, Files (prompt paths), Prime Claude. General hosts the per-model preset table (`ModelPresetRowViewModel`: effort + max turns per alias) which **replaced** the single global "Max turns" field. |
+| `SettingsModalViewModel` | Four tabs: General, Worktrees, Files (prompt paths), Prime Claude. General hosts the per-model preset table (`ModelPresetRowViewModel`: effort + max turns per alias) which **replaced** the single global "Max turns" field. The Prime Claude tab gives each schedule row a three-way action radio group (Ping / Fill My Day / Custom) — `RadioButton.GroupName` is bound to a **per-row** `RadioGroup` string, since a shared group name would make every schedule share one selection. `DailyPrepMaxTasks` is disabled unless some row is `FillMyDay`. |
 | `ListSettingsModalViewModel` | Name, working dir, commit type, "manual list" flag, `VerifyCommand`, delete. Hosts the shared `AgentConfigEditorViewModel` as `Agent` (scope=List) — ⚠️ save delegates to `Agent.SaveAsync(verifyCommand)` because both land in the same `list_config` row via one `UpdateListConfig` call and would otherwise clobber each other. |
 | `WeeklyReportModalViewModel` | Range pickers default "since last standup weekday → today", cached per range. |
 | `MergeHelperSelectionModalViewModel` | "Let Claude handle it" picker → [conpty-sessions](../../docs/explore-notes/conpty-sessions.md). |
diff --git a/src/ClaudeDo.Worker/CLAUDE.md b/src/ClaudeDo.Worker/CLAUDE.md
index 8e6f8149..85d1da94 100644
--- a/src/ClaudeDo.Worker/CLAUDE.md
+++ b/src/ClaudeDo.Worker/CLAUDE.md
@@ -33,8 +33,8 @@ Worker/
   Hub/          — WorkerHub, HubBroadcaster
   Logging/      — LogRingBuffer (30-min window) + BroadcastLogSink (Serilog → footer + overlay)
   Report/       — ClaudeHistoryReader, WeekReportPromptBuilder, WeekReportService
-  Prime/        — daily prep ("Prime Claude"): PrimeScheduler, PrimeRunner, DailyPrepPrompt,
-                  NextDueCalculator, PrimeScheduleSignal
+  Prime/        — "Prime Claude" schedules: PrimeScheduler, PrimeRunner, PrimePrompts,
+                  DailyPrepPrompt, PrimeScheduleValidation, NextDueCalculator, PrimeScheduleSignal
   Online/       — optional Online Inbox sync (off by default; zero network when disabled)
   Usage/        — OAuth usage monitor, gate, throttle, per-session token reader;
                   TokenTracker/ = the external analytics backend (cost + per-model/per-task breakdown)
@@ -131,7 +131,26 @@ the **session transcript**, not the stream-json result event, as a per-run delta
 [usage-monitoring](../../docs/explore-notes/usage-monitoring.md). `TaskRunner.ContinueAsync` sends
 a follow-up prompt to an existing session via `--resume <session_id>`.
 
-## Daily Prep (Prime Claude)
+## Prime Claude
+
+Every schedule carries a `PrimeActionKind` (`Ping` — the default for new schedules — `FillMyDay`,
+or `Custom`). `PrimeRunner.FireAsync` holds one `SemaphoreSlim` gate for **all** kinds, then
+branches:
+
+| Kind | Prompt | Args | Log + `Prep*` events |
+|---|---|---|---|
+| `Ping` | `PrimePrompts.PingPrompt`, fixed | `--max-turns 1 --strict-mcp-config` (no MCP server loads at all) | none |
+| `FillMyDay` | `DailyPrepPrompt.BuildPrompt` (+ the schedule's prompt as an *addition*) | the two MyDay MCP tools | `daily-prep.log`, truncated per run, + `PrepStarted`/`PrepLine`/`PrepFinished` |
+| `Custom` | the schedule's prompt *verbatim* | `--allowedTools mcp__claudedo` — no Read/Write/Edit/Bash | none |
+
+Ping and Custom deliberately write **no** log and raise **no** `Prep*` events: the prep log
+belongs to the MyDay selection and would otherwise be overwritten with ping noise. All three
+kinds still broadcast `PrimeFired` and update `last_run_at`.
+
+`WorkerHub.RunDailyPrepNow` (the "Plan day" button) pins its synthetic schedule to `FillMyDay` —
+the button means "fill my day" no matter how the schedules are configured.
+`WorkerHub.UpsertPrimeSchedule` runs `PrimeScheduleValidation.Validate` first, so a `Custom`
+schedule can never be saved without a prompt.
 
 **PrimeScheduler** (`BackgroundService`) computes the next due time from `prime_schedules` and
 calls `IPrimeRunner.FireAsync`; manual runs arrive via `WorkerHub.RunDailyPrepNow`. The