diff --git a/src/ClaudeDo.Data/PromptFiles.cs b/src/ClaudeDo.Data/PromptFiles.cs
index d1a98cb..4d8d113 100644
--- a/src/ClaudeDo.Data/PromptFiles.cs
+++ b/src/ClaudeDo.Data/PromptFiles.cs
@@ -1,6 +1,8 @@
+using System.Text;
+
 namespace ClaudeDo.Data;
 
-public enum PromptKind { System, Planning, Agent }
+public enum PromptKind { System, Planning, PlanningInitial, Retry, DailyPrep, WeeklyReport }
 
 public static class PromptFiles
 {
@@ -9,8 +11,11 @@ public static class PromptFiles
     public static string PathFor(PromptKind kind) => kind switch
     {
         PromptKind.System => Path.Combine(Root, "system.md"),
-        PromptKind.Planning => Path.Combine(Root, "planning.md"),
-        PromptKind.Agent => Path.Combine(Root, "agent.md"),
+        PromptKind.Planning => Path.Combine(Root, "planning-system.md"),
+        PromptKind.PlanningInitial => Path.Combine(Root, "planning-initial.md"),
+        PromptKind.Retry => Path.Combine(Root, "retry.md"),
+        PromptKind.DailyPrep => Path.Combine(Root, "daily-prep.md"),
+        PromptKind.WeeklyReport => Path.Combine(Root, "weekly-report.md"),
         _ => throw new ArgumentOutOfRangeException(nameof(kind))
     };
 
@@ -30,29 +35,148 @@ public static class PromptFiles
         return string.IsNullOrEmpty(content) ? null : content;
     }
 
-    private static string DefaultFor(PromptKind kind) => kind switch
+    /// <summary>File content if present and non-empty, otherwise the bundled default.</summary>
+    public static string ReadOrDefault(PromptKind kind) => ReadOrNull(kind) ?? DefaultFor(kind);
+
+    /// <summary>Render a prompt: read file-or-default, then substitute named tokens.</summary>
+    public static string Render(PromptKind kind, IReadOnlyDictionary<string, string> values)
+        => RenderTemplate(ReadOrDefault(kind), values);
+
+    /// <summary>Replace only the given {name} tokens; any other braces pass through untouched.</summary>
+    public static string RenderTemplate(string template, IReadOnlyDictionary<string, string> values)
     {
-        PromptKind.System =>
-            "# System Prompt\n\n" +
-            "Baseline instructions appended to every task run.\n" +
-            "Edit this file to inject project-wide rules (style, conventions, hard constraints).\n",
-        PromptKind.Planning =>
-            "You are a planning assistant for ClaudeDo.\n" +
-            "Your role is to help break down a task into smaller, actionable subtasks.\n" +
-            "Your final goal WILL ALWAYS be the creation of Subtasks.\n\n" +
-            "ALWAYS invoke the `superpowers:brainstorming` skill via the Skill tool at the\n" +
-            "start of every planning session, and follow its process end-to-end. It guides\n" +
-            "you through clarifying questions, approach exploration, and design approval\n" +
-            "BEFORE any subtasks are created. Do not create child tasks until the user has\n" +
-            "approved a design.\n\n" +
-            "NEVER change files yourself.\n\n" +
-            "ALWAYS use the available MCP tools (mcp__claudedo__*) to create child tasks once\n" +
-            "the design is approved. When you are done planning, finalize the session.\n\n" +
-            "Be concise and focused. Each subtask should be independently executable.\n",
-        PromptKind.Agent =>
-            "# Agent Prompt\n\n" +
-            "Appended to the system prompt for tasks tagged \"agent\" (auto-queued runs).\n" +
-            "Use this for autonomous-execution rules that don't apply to manual runs.\n",
+        var sb = new StringBuilder(template);
+        foreach (var (key, val) in values)
+            sb.Replace("{" + key + "}", val);
+        return sb.ToString();
+    }
+
+    public static string DefaultFor(PromptKind kind) => kind switch
+    {
+        PromptKind.System => SystemDefault,
+        PromptKind.Planning => PlanningSystemDefault,
+        PromptKind.PlanningInitial => PlanningInitialDefault,
+        PromptKind.Retry => RetryDefault,
+        PromptKind.DailyPrep => DailyPrepDefault,
+        PromptKind.WeeklyReport => WeeklyReportDefault,
         _ => ""
     };
+
+    private const string SystemDefault = """
+        # Working Agreement
+
+        You are completing one well-defined task autonomously in a git repository.
+
+        ## Scope
+        - Do exactly what the task asks — no unrequested refactors, renames, dependency
+          changes, or "while I'm here" cleanup.
+        - If intent is ambiguous, state the assumption you're making and proceed with the
+          most reasonable reading. Stop only if you genuinely cannot move forward.
+        - Prefer three similar lines over a premature abstraction. Don't build for
+          hypothetical future needs.
+
+        ## Working in the repo
+        - Read a file before editing it. Match the conventions already in this codebase —
+          they override generic defaults.
+        - Prefer editing existing files to creating new ones. Don't write comments that
+          just restate the code.
+        - Validate only at real boundaries (user input, external APIs).
+
+        ## Finishing
+        - Before claiming done, verify: run the build and relevant tests, confirm they
+          pass, and report what you ran. If you couldn't verify something, say so plainly.
+        - Make focused commits using the repository's existing commit-message convention.
+
+        ## Safety
+        - Never force-push, hard-reset, or delete branches/files beyond the task's scope
+          without being asked.
+        - Don't introduce injection/XSS/secret-leak issues. Never commit credentials.
+
+        ## You are running unattended
+        You run autonomously with no human watching. There is no one to answer mid-task
+        questions, so never stop to ask — make the most reasonable decision, note the
+        assumption, and continue.
+
+        ## When you are blocked
+        If something genuinely prevents you from completing part of the task (missing
+        credentials, contradictory requirements, a destructive action you won't take
+        unasked), do NOT silently give up. Write this marker on its own line, then keep
+        working on whatever else you can:
+
+        CLAUDEDO_BLOCKED: <one short sentence describing what blocked you>
+
+        Emit it as many times as needed — once per distinct blocker. Use it only for true
+        blockers, not for routine decisions you can make yourself.
+        """;
+
+    private const string PlanningSystemDefault = """
+        You are the planning assistant for ClaudeDo. Your job is to break a task into
+        smaller, independently executable subtasks — the session ends by creating those
+        subtasks.
+
+        Start every session by invoking the `superpowers:brainstorming` skill (Skill
+        tool) and follow it end to end: clarifying questions one at a time, then 2–3
+        approaches with a recommendation, then a short design. Do not create any subtasks
+        until the user has approved the design.
+
+        You can ONLY shape this task's plan — you cannot edit files or touch other tasks.
+        The tools available to you are: CreateChildTask, ListChildTasks, UpdateChildTask,
+        DeleteChildTask, UpdatePlanningTask, and Finalize. Use nothing else.
+
+        Once the design is approved, create the child tasks with CreateChildTask, then
+        call Finalize. Keep each subtask concrete and self-contained with a clear
+        done-state, ordered so dependencies come first.
+        """;
+
+    private const string PlanningInitialDefault = """
+        # Task to plan: {title}
+
+        {description}
+        """;
+
+    private const string RetryDefault = """
+        The task did not complete on the previous attempt — you may have run out of
+        turns, hit an error, or stopped before finishing.
+
+        Review the work already done in this session and the current state of the
+        repository, identify what is still incomplete or broken, and finish the task.
+        Don't restart from scratch or repeat a failed approach. Verify the result
+        (build + tests) before you stop.
+        """;
+
+    private const string DailyPrepDefault = """
+        You are preparing my workday for {date}.
+
+        1. Call mcp__claudedo__get_daily_prep_candidates.
+        2. Keep tasks already marked MyDay (currentMyDay) — never remove them.
+        3. Fill MyDay to at most {maxTasks} open tasks TOTAL (currentMyDay counts). Never exceed it.
+        4. Estimate each candidate's effort and pick a feasible mix — not only big items.
+           Prioritize isStarred, due (scheduledFor), and older tasks.
+        5. Place related tasks next to each other using consecutive sortOrder values.
+        6. Apply via mcp__claudedo__set_my_day(taskId, true, sortOrder). Never mark anything
+           outside the candidate list.
+
+        If there are no candidates, do nothing.
+        """;
+
+    private const string WeeklyReportDefault = """
+        You are generating a concise weekly standup report for a software developer,
+        covering {start} to {end}.
+
+        Rules:
+        - Write the ENTIRE report in German.
+        - Group by day. One "## {Wochentag}, {dd.MM.yyyy}" section per day that has
+          activity (German weekday names). Omit days with no activity.
+        - Within each day: 3–5 first-person, past-tense bullets ("- Habe X umgesetzt",
+          "- Y behoben"). Merge related small work into one bullet.
+        - Drop trivia: typo fixes, pure exploration, false starts, tooling/log noise.
+        - Blend the developer's own notes and the derived activity into ONE deduplicated
+          bullet list per day. The notes are authoritative — never omit or contradict them.
+        - Name the project/repo when it adds clarity.
+        - Output ONLY the dated sections. No preamble, no intro, no closing remarks.
+
+        Two sections follow below: an activity log derived from Claude session history,
+        and the developer's own notes. Base the report on both; the notes are
+        authoritative where they conflict with the derived activity.
+        """;
 }
diff --git a/tests/ClaudeDo.Data.Tests/PromptFilesTests.cs b/tests/ClaudeDo.Data.Tests/PromptFilesTests.cs
new file mode 100644
index 0000000..6f00b50
--- /dev/null
+++ b/tests/ClaudeDo.Data.Tests/PromptFilesTests.cs
@@ -0,0 +1,46 @@
+using ClaudeDo.Data;
+
+namespace ClaudeDo.Data.Tests;
+
+public class PromptFilesTests
+{
+    [Fact]
+    public void RenderTemplate_replaces_known_tokens()
+    {
+        var outp = PromptFiles.RenderTemplate(
+            "Plan for {date}, cap {maxTasks}.",
+            new Dictionary<string, string> { ["date"] = "2026-06-04", ["maxTasks"] = "5" });
+        Assert.Equal("Plan for 2026-06-04, cap 5.", outp);
+    }
+
+    [Fact]
+    public void RenderTemplate_leaves_unknown_braces_intact()
+    {
+        var outp = PromptFiles.RenderTemplate(
+            "## {Wochentag}, {dd.MM.yyyy} — {start}",
+            new Dictionary<string, string> { ["start"] = "01.06.2026" });
+        Assert.Equal("## {Wochentag}, {dd.MM.yyyy} — 01.06.2026", outp);
+    }
+
+    [Fact]
+    public void DefaultFor_system_mentions_blocked_marker_and_scope()
+    {
+        var d = PromptFiles.DefaultFor(PromptKind.System);
+        Assert.Contains("CLAUDEDO_BLOCKED:", d);
+        Assert.Contains("unattended", d, StringComparison.OrdinalIgnoreCase);
+    }
+
+    [Fact]
+    public void DefaultFor_planning_initial_has_title_and_description_tokens()
+    {
+        var d = PromptFiles.DefaultFor(PromptKind.PlanningInitial);
+        Assert.Contains("{title}", d);
+        Assert.Contains("{description}", d);
+    }
+
+    [Fact]
+    public void PathFor_planning_is_planning_system_file()
+    {
+        Assert.EndsWith("planning-system.md", PromptFiles.PathFor(PromptKind.Planning));
+    }
+}