diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index f6a0f80..d4ead2d 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -178,6 +178,38 @@ def integrate
     redirect_to root_path, notice: "Day completed."
   end
 
+  # POST /save_textarea
+  def save_textarea
+    return render json: { error: "Not authenticated" }, status: 401 unless current_resonance
+    return render json: { error: "Active subscription required" }, status: 403 unless current_resonance.active_subscription?
+
+    # Check for cross-device continuity divergence
+    client_universe_time = params[:universe_time]
+    server_universe_time = current_resonance.universe_time
+
+    if client_universe_time && client_universe_time != server_universe_time
+      # Parse and compare "day:count" format
+      client_day, client_count = client_universe_time.split(":").map(&:to_i)
+      server_day, server_count = server_universe_time.split(":").map(&:to_i)
+
+      # If client is behind server, they're working with stale state
+      if client_day < server_day || (client_day == server_day && client_count < server_count)
+        render json: {
+          error: "continuity_divergence",
+          message: "This space moved forward elsewhere.",
+          server_universe_time: server_universe_time
+        }, status: 409
+        return
+      end
+    end
+
+    # Save textarea content
+    current_resonance.textarea = params[:textarea]
+    current_resonance.save!
+
+    render json: { status: "saved", universe_time: current_resonance.universe_time }
+  end
+
   # POST /subscription
   def create_subscription
     return redirect_to root_path, alert: "Please sign in" unless current_resonance
diff --git a/app/javascript/controllers/chat_controller.js b/app/javascript/controllers/chat_controller.js
index 9981427..6fa7a10 100644
--- a/app/javascript/controllers/chat_controller.js
+++ b/app/javascript/controllers/chat_controller.js
@@ -4,12 +4,14 @@ export default class extends Controller {
   static targets = ["log", "input"]
   static values = {
     narrative: Array,
-    universeTime: String
+    universeTime: String,
+    savedTextarea: String
   }
 
   connect() {
     this.loadExistingMessages()
     this.loadSavedInput()
+    this.saveDebounceTimeout = null
   }
 
   loadExistingMessages() {
@@ -40,8 +42,13 @@ export default class extends Controller {
     textarea.style.height = "auto"
     textarea.style.height = textarea.scrollHeight + "px"
 
-    // Save input to localStorage
+    // Save input to localStorage immediately
     this.saveInputToStorage(textarea.value)
+
+    // Debounced save to server (unless this is a programmatic event from loadSavedInput)
+    if (!event.skipServerSave) {
+      this.debouncedSaveToServer(textarea.value)
+    }
   }
 
   saveInputToStorage(value) {
@@ -49,19 +56,73 @@ export default class extends Controller {
     localStorage.setItem(storageKey, value)
   }
 
+  debouncedSaveToServer(value) {
+    // Clear existing timeout
+    if (this.saveDebounceTimeout) {
+      clearTimeout(this.saveDebounceTimeout)
+    }
+
+    // Set new timeout to save after 1.5 seconds of inactivity
+    this.saveDebounceTimeout = setTimeout(() => {
+      this.saveToServer(value)
+    }, 1500)
+  }
+
+  async saveToServer(value) {
+    try {
+      const response = await fetch("/textarea", {
+        method: "PUT",
+        headers: {
+          "Content-Type": "application/json",
+          "X-CSRF-Token": document.querySelector('meta[name="csrf-token"]').content
+        },
+        body: JSON.stringify({
+          textarea: value,
+          universe_time: this.universeTimeValue
+        })
+      })
+
+      if (response.status === 409) {
+        // Continuity divergence - this space moved forward elsewhere
+        const data = await response.json()
+        console.warn("Textarea save blocked: continuity divergence", data)
+        // Could show a subtle notice here if desired
+      } else if (!response.ok) {
+        console.error("Failed to save textarea:", response.status)
+      }
+    } catch (error) {
+      console.error("Error saving textarea:", error)
+      // Fail silently - localStorage still has it
+    }
+  }
+
   loadSavedInput() {
+    // Prefer server-saved value over localStorage
+    const serverSaved = this.savedTextareaValue
     const storageKey = `yours-input-${this.universeTimeValue || 'current'}`
-    const savedInput = localStorage.getItem(storageKey)
+    const localSaved = localStorage.getItem(storageKey)
+
+    // Use whichever is longer (assumes the longer one is more recent)
+    // In practice, server value is canonical for cross-device sync
+    const savedInput = (serverSaved && serverSaved.length >= (localSaved || "").length)
+      ? serverSaved
+      : localSaved
+
     if (savedInput) {
       this.inputTarget.value = savedInput
-      // Trigger input event to auto-expand
-      this.inputTarget.dispatchEvent(new Event('input'))
+      // Trigger input event to auto-expand (but don't re-trigger server save)
+      const event = new Event('input')
+      event.skipServerSave = true
+      this.inputTarget.dispatchEvent(event)
     }
   }
 
   clearSavedInput() {
     const storageKey = `yours-input-${this.universeTimeValue || 'current'}`
     localStorage.removeItem(storageKey)
+
+    // Also clear on server
+    this.saveToServer("")
   }
 
   send() {
diff --git a/app/models/resonance.rb b/app/models/resonance.rb
index b4b441c..e58f5c7 100644
--- a/app/models/resonance.rb
+++ b/app/models/resonance.rb
@@ -111,6 +111,15 @@ def universe_day=(value)
     self.encrypted_universe_day = value.nil? ? nil : encrypt_field(value.to_s)
   end
 
+  # Textarea contents
+  def textarea
+    decrypt_field(encrypted_textarea)
+  end
+
+  def textarea=(value)
+    self.encrypted_textarea = encrypt_field(value)
+  end
+
   # Universe time as "day:message_count" (e.g., "3:14" for day 3, 14 messages)
   # This serves as a monotonically increasing guard against cross-device state clobbering
   def universe_time
diff --git a/app/views/application/account.html.erb b/app/views/application/account.html.erb
index 416b328..dda8813 100644
--- a/app/views/application/account.html.erb
+++ b/app/views/application/account.html.erb
@@ -61,7 +61,7 @@
 
 <div style="margin: 3rem 0; padding-top: 2rem; border-top: 1px solid var(--border);">
   <h2>Begin again</h2>
-  <p>Want to clear in-universe memory completely? (This won't affect your subscription or your in-universe day counter.)</p>
+  <p>Want to clear in-universe memory completely? (This will not reset the day counter, and will not cancel your subscription.)</p>
   <p style="margin-top: 1rem; color: var(--warning);">This action cannot be undone.</p>
 
   <%= button_to "Begin Again",
diff --git a/app/views/application/chat.html.erb b/app/views/application/chat.html.erb
index ec3a575..f3afa7b 100644
--- a/app/views/application/chat.html.erb
+++ b/app/views/application/chat.html.erb
@@ -1,4 +1,4 @@
-<div data-controller="chat" data-chat-narrative-value="<%= @narrative.to_json %>" data-chat-universe-time-value="<%= current_resonance.universe_time %>" style="display: flex; flex-direction: column; gap: 1rem;">
+<div data-controller="chat" data-chat-narrative-value="<%= @narrative.to_json %>" data-chat-universe-time-value="<%= current_resonance.universe_time %>" data-chat-saved-textarea-value="<%= h(current_resonance.textarea || "") %>" style="display: flex; flex-direction: column; gap: 1rem;">
   <div id="chat-log" data-chat-target="log" style="display: flex; flex-direction: column; gap: 1rem;">
     <!-- Messages will appear here -->
   </div>
diff --git a/config/routes.rb b/config/routes.rb
index 0d44b87..7e82ad2 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -9,6 +9,7 @@
   # Service routes
   post "stream", to: "application#stream"
   post "integrate", to: "application#integrate"
+  put "textarea", to: "application#save_textarea"
   post "subscription", to: "application#create_subscription"
   delete "subscription", to: "application#destroy_subscription"
   post "reset", to: "application#reset"
diff --git a/db/migrate/20251010233556_add_encrypted_textarea_to_resonances.rb b/db/migrate/20251010233556_add_encrypted_textarea_to_resonances.rb
new file mode 100644
index 0000000..3d78d37
--- /dev/null
+++ b/db/migrate/20251010233556_add_encrypted_textarea_to_resonances.rb
@@ -0,0 +1,5 @@
+class AddEncryptedTextareaToResonances < ActiveRecord::Migration[8.0]
+  def change
+    add_column :resonances, :encrypted_textarea, :text
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index d340d14..9123039 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_10_03_235135) do
+ActiveRecord::Schema[8.0].define(version: 2025_10_10_233556) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"
 
@@ -19,5 +19,6 @@
     t.text "encrypted_integration_harmonic_by_night"
     t.text "encrypted_narrative_accumulation_by_day"
     t.text "encrypted_universe_day"
+    t.text "encrypted_textarea"
   end
 end
diff --git a/spec/models/resonance_spec.rb b/spec/models/resonance_spec.rb
index e56c423..0696a3c 100644
--- a/spec/models/resonance_spec.rb
+++ b/spec/models/resonance_spec.rb
@@ -240,4 +240,64 @@
       expect(resonance).to be_valid
     end
   end
+
+  describe "#textarea" do
+    let(:google_id) { "google-user-123" }
+
+    it "stores and retrieves textarea content" do
+      resonance = Resonance.find_or_create_by_google_id(google_id)
+      resonance.textarea = "thinking about something..."
+      resonance.save!
+
+      reloaded = Resonance.find_by_google_id(google_id)
+      expect(reloaded.textarea).to eq("thinking about something...")
+    end
+
+    it "encrypts the textarea content" do
+      resonance = Resonance.find_or_create_by_google_id(google_id)
+      resonance.textarea = "secret thought"
+      resonance.save!
+
+      expect(resonance.encrypted_textarea).to be_present
+      expect(resonance.encrypted_textarea).not_to include("secret thought")
+    end
+
+    it "persists across day transitions" do
+      resonance = Resonance.find_or_create_by_google_id(google_id)
+      resonance.textarea = "carrying this forward"
+      resonance.universe_day = 1
+      resonance.narrative_accumulation_by_day = [
+        { role: "user", content: [ { type: "text", text: "Day 1 message" } ] }
+      ]
+      resonance.save!
+
+      # Simulate day transition (like integrate action does)
+      resonance.universe_day = 2
+      resonance.narrative_accumulation_by_day = []
+      resonance.integration_harmonic_by_night = "some harmonic"
+      resonance.save!
+
+      # Textarea should persist unchanged
+      reloaded = Resonance.find_by_google_id(google_id)
+      expect(reloaded.textarea).to eq("carrying this forward")
+      expect(reloaded.universe_day).to eq(2)
+    end
+
+    it "returns nil when not set" do
+      resonance = Resonance.find_or_create_by_google_id(google_id)
+      expect(resonance.textarea).to be_nil
+    end
+
+    it "can be explicitly cleared" do
+      resonance = Resonance.find_or_create_by_google_id(google_id)
+      resonance.textarea = "something"
+      resonance.save!
+
+      resonance.textarea = nil
+      resonance.save!
+
+      reloaded = Resonance.find_by_google_id(google_id)
+      expect(reloaded.textarea).to be_nil
+    end
+  end
 end