diff --git a/.planning/season-7-end-state.md b/.planning/season-7-end-state.md
new file mode 100644
index 0000000..9a6fed7
--- /dev/null
+++ b/.planning/season-7-end-state.md
@@ -0,0 +1,112 @@
+# Season 7 End-State Design (Principle-Level)
+
+*Phase 1 deliverable per PIPE-05 + CONTEXT D-08. Principle-level only — treatment text is authored in Phase 7.*
+
+This document answers the question that ends ROADMAP.md Phase 7's success criterion #4:
+
+> *"the finite Roothold ceiling from Phase 4 has held the line, and the game has ended
+> the way A Dark Room and Universal Paperclips ended."*
+
+Per .planning/research/PITFALLS.md #1, "the story ends but the idle loop doesn't"
+is the single most dangerous structural pitfall for this project. This document
+is the canonical answer the project has *before* any economy code lands in Phase 2.
+
+Per CONTEXT D-08: this is **principle-level**, not treatment-level. It defines the
+contract Phase 7's authoring obeys, not the text of any final scene.
+
+## What does *rest state* mean?
+
+The rest state is the post-credits configuration the player can return to indefinitely
+without grinding. Concretely:
+
+- **No new fragments are added to the pool.** All authored content has been delivered.
+  Harvests after the final binary choice yield re-readable previously-collected
+  fragments — nothing new.
+- **No new currency tiers unlock.** Roothold has reached its finite ceiling (see below)
+  and stays there. There is no "Season 8" hidden behind a number.
+- **The garden continues to render and respond to clicks.** Plants can still be
+  planted. Seasons (now in Return register) continue to crossfade. The world is
+  not frozen — it is *finished*.
+- **The Pale has receded.** The Heartsoil expands beyond the garden walls. Lura's
+  arc has resolved. The Archivist's question has been answered (in the player's
+  Season 7 binary choice — STRY-08).
+- **The cello and ambient layers continue.** The audio is *quiet*, *finite*,
+  *understood* — never crescendos again, never hard-cuts.
+
+This is not "endgame content." It is **rest**. Lineage: *A Dark Room* fades to its
+ending screen and the player returns to it for the same reason they return to a
+finished album — not because there is more, but because there was *enough*.
+
+## What is the finite Roothold ceiling tied to?
+
+Roothold's ceiling is anchored in the **count of authored fragments and the count
+of Seasons** — not in an arbitrary number, not in a designer's intuition.
+
+The principle:
+
+> *One cannot accumulate more Roothold than the player has actually understood,
+> and what the player can understand is bounded by what the writer has actually written.*
+
+Concrete tie:
+
+- Roothold gain per Season is gated to a hard cap proportional to the fragment
+  count of that Season + a small contribution from Roothold-relevant story beats
+  (Lura conversations, the Nameless Man's arc, the Archivist's question, etc.).
+- Total Roothold ceiling = Σ(per-Season caps).
+- **Phase 4 enforces this cap** when it implements `migrate_v1_to_v2` and the
+  prestige state machine (SEAS-04). Phase 7 verifies the ceiling holds through
+  full play.
+- When Roothold reaches the ceiling, the UI displays "Roothold (full)" — never
+  a hidden multiplier or "go again to overflow."
+
+Implication for designers: when adding fragments in Phase 5+, the Roothold ceiling
+*moves* — adding 5 new Season-3 fragments adds proportional headroom. This is
+intentional. Roothold is bounded by content; content is bounded by the writer.
+
+## What tonal register does the coda live in?
+
+- **Warm**, not pyrrhic. The garden persists *because* you tended it; this is
+  earned redemption, not survival. Lineage: the closing minutes of *Spiritfarer*,
+  not the closing minutes of *A Dark Room* (which earned its bitterness; we earn
+  our warmth).
+- **Quiet**, not climactic. The cello does not crescendo at the binary choice.
+  It rests. The chosen ending paragraph displays softly; "The garden persists."
+  lands without underscore.
+- **Specific**, not abstract. The final visible state is a *real* garden — the
+  one this player built, with their actual planted ecosystems, their actual
+  Roothold value, their actual collected fragments — viewed in soft dawn-silver
+  light per AEST-06's Season-7 palette anchor.
+- **Final**, not infinite. There is no Season 8. There is no New Game+. The Pale
+  receded **here**, in **this** garden. Future patches may add cosmetic items or
+  additional fragments per CONT-01 (post-launch additive content), but they slot
+  *between* authored beats; they never extend the arc.
+
+## What this document is NOT
+
+This document defines principles. It does **not** define:
+
+- The text of the Season 7 binary-choice scene — *authored Phase 7*.
+- The text of either ending paragraph (`"They help us remember"` / `"They help us grow"`) — *authored Phase 7*.
+- The exact line "The garden persists." appears in both endings, but its surrounding
+  paragraph and Lura's final line are *authored Phase 7*, not Phase 1.
+- The credits / coda screen visual treatment — *designed Phase 7*.
+- The exact tonal register or shape of individual final-Season fragments — *authored Phase 7*.
+- The numeric value of the Roothold ceiling — *computed Phase 4* from the
+  content count at that point + ROADMAP-locked principle.
+
+This document is **the principle the economy obeys, the writer obeys, and the
+Phase 7 designer obeys** — not the implementation of any of those.
+
+## Source Documents
+
+This doctrine consolidates constraints already locked in:
+
+- **PROJECT.md** § "Core Value" — "every idle mechanic must function as a metaphor"; "what survives is what you understood"
+- **REQUIREMENTS.md** SEAS-04 (finite Roothold ceiling), SEAS-09 (Season 7 late-game shape), SEAS-10 (rest state, not infinite prestige tiers), STRY-08 (binary choice + "The garden persists.")
+- **ROADMAP.md** § "Phase 7: Season 7 (Return) & Final Choice" — the 4 success criteria
+- **.planning/research/PITFALLS.md** § "Pitfall 1: The Story Ends but the Idle Loop Doesn't" — the rationale this document directly addresses
+
+---
+
+*Authored: Phase 1 deliverable. Phase 4 enforces the Roothold ceiling. Phase 7 authors
+the treatment-level final scenes against the principles above.*
diff --git a/scripts/doctrine.test.ts b/scripts/doctrine.test.ts
new file mode 100644
index 0000000..2569fbe
--- /dev/null
+++ b/scripts/doctrine.test.ts
@@ -0,0 +1,79 @@
+import { describe, it, expect } from 'vitest';
+import { readFileSync, existsSync } from 'node:fs';
+
+// PIPE-05 doctrine doc-lint test.
+//
+// Per RESEARCH § "Validation Architecture" PIPE-05 row, this is the only
+// automated enforcement of the Phase-1 doctrine documents. CONTEXT D-07
+// explicitly forbids a lint rule on UX strings, so this structural test
+// asserts (a) both docs exist on disk, (b) each contains its required H2
+// sections, (c) each cites its required source documents.
+//
+// If a future plan moves either doc, update PATH constants below.
+
+describe('PIPE-05: doctrine documents exist with required H2 sections', () => {
+  describe('.planning/anti-fomo-doctrine.md', () => {
+    const PATH = '.planning/anti-fomo-doctrine.md';
+
+    it('exists', () => {
+      expect(existsSync(PATH)).toBe(true);
+    });
+
+    it('contains all 4 required H2 sections', () => {
+      const md = readFileSync(PATH, 'utf8');
+      expect(md).toMatch(/^## Banned Mechanics$/m);
+      expect(md).toMatch(/^## Allowed Engagement$/m);
+      expect(md).toMatch(/^## Review Checklist$/m);
+      expect(md).toMatch(/^## Source Documents$/m);
+    });
+
+    it('cites all 4 source documents (PROJECT, REQUIREMENTS, CLAUDE, PITFALLS)', () => {
+      const md = readFileSync(PATH, 'utf8');
+      expect(md).toMatch(/PROJECT\.md/);
+      expect(md).toMatch(/REQUIREMENTS\.md/);
+      expect(md).toMatch(/CLAUDE\.md/);
+      expect(md).toMatch(/PITFALLS\.md/);
+    });
+
+    it('does NOT propose a lint rule on UX strings (CONTEXT D-07 explicit rejection)', () => {
+      const md = readFileSync(PATH, 'utf8');
+      // The doc may *mention* that lint rules were rejected, but it must not
+      // propose adding one. Allow "no lint rule" but reject "add a lint rule".
+      expect(md).not.toMatch(/\b(add|implement|propose).{0,40}lint rule/i);
+    });
+  });
+
+  describe('.planning/season-7-end-state.md', () => {
+    const PATH = '.planning/season-7-end-state.md';
+
+    it('exists', () => {
+      expect(existsSync(PATH)).toBe(true);
+    });
+
+    it('contains all 5 required H2 sections (CONTEXT D-08)', () => {
+      const md = readFileSync(PATH, 'utf8');
+      expect(md).toMatch(/^## What does \*rest state\* mean\?$/m);
+      expect(md).toMatch(/^## What is the finite Roothold ceiling tied to\?$/m);
+      expect(md).toMatch(/^## What tonal register does the coda live in\?$/m);
+      expect(md).toMatch(/^## What this document is NOT$/m);
+      expect(md).toMatch(/^## Source Documents$/m);
+    });
+
+    it('cites SEAS-04, SEAS-09, SEAS-10, STRY-08', () => {
+      const md = readFileSync(PATH, 'utf8');
+      expect(md).toMatch(/SEAS-04/);
+      expect(md).toMatch(/SEAS-09/);
+      expect(md).toMatch(/SEAS-10/);
+      expect(md).toMatch(/STRY-08/);
+    });
+
+    it('does NOT include treatment-level details forbidden by CONTEXT D-08', () => {
+      const md = readFileSync(PATH, 'utf8');
+      // Check the "What this document is NOT" section is present — this is the
+      // structural guarantee against treatment-level scope creep.
+      expect(md).toMatch(/## What this document is NOT/);
+      // The doc must explicitly disclaim authoring the ending paragraphs.
+      expect(md).toMatch(/authored Phase 7/);
+    });
+  });
+});
diff --git a/tsconfig.node.json b/tsconfig.node.json
index 001be2e..48b1567 100644
--- a/tsconfig.node.json
+++ b/tsconfig.node.json
@@ -17,5 +17,5 @@
     "noFallthroughCasesInSwitch": true,
     "noUncheckedSideEffectImports": true
   },
-  "include": ["vite.config.ts", "vitest.config.ts", "playwright.config.ts", "scripts/**/*.mjs"]
+  "include": ["vite.config.ts", "vitest.config.ts", "playwright.config.ts", "scripts/**/*.mjs", "scripts/**/*.ts"]
 }
diff --git a/vitest.config.ts b/vitest.config.ts
index d0bff50..22b35af 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -11,7 +11,7 @@ import { defineConfig } from 'vitest/config';
 export default defineConfig({
   test: {
     environment: 'happy-dom',
-    include: ['src/**/*.test.ts', 'src/**/*.test.tsx', 'scripts/**/*.test.mjs'],
+    include: ['src/**/*.test.ts', 'src/**/*.test.tsx', 'scripts/**/*.test.mjs', 'scripts/**/*.test.ts'],
     passWithNoTests: false,
     globals: false,
   },