rename: Note→Post/Line (dashboard); Recognition→Note (drama); new-post/my-posts to billboard

- dashboard: Note→Post, Item→Line across models, forms, views, API, urls & tests
- new-post (9×3) & my-posts (3×3) applets migrate from dashboard→billboard context; billboard view passes form & recent_posts
- drama: Recognition→Note, related_name notes; billboard URL /recognition/→/my-notes/, set-palette at /note/<slug>/set-palette
- recognition.js→note.js (module Note, data.note key); recognition-page.js→note-page.js; .recog-*→.note-*
- _recognition.scss→_note.scss; BillNotes page header; applet slug billboard-recognition→billboard-notes (My Notes)
- NoteSpec.js replaces RecognitionSpec.js; test_recognition.py→test_applet_my_notes.py
- 4 migrations applied: dashboard 0004, applets 0011+0012, drama 0005; 683 ITs green

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/functional_tests/post_page.py

@@ -0,0 +1,52 @@
+from selenium.webdriver.common.by import By
+from selenium.webdriver.common.keys import Keys
+
+from .base import wait
+
+
+class PostPage:
+    def __init__(self, test):
+        self.test = test
+
+    def get_table_rows(self):
+        return self.test.browser.find_elements(By.CSS_SELECTOR, "#id_post_table tr")
+
+    @wait
+    def wait_for_row_in_post_table(self, line_text, line_number):
+        expected_row_text = f"{line_number}. {line_text}"
+        rows = self.get_table_rows()
+        self.test.assertIn(expected_row_text, [row.text for row in rows])
+
+    def get_line_input_box(self):
+        return self.test.browser.find_element(By.ID, "id_text")
+
+    def add_post_line(self, line_text):
+        new_line_no = len(self.get_table_rows()) + 1
+        self.get_line_input_box().send_keys(line_text)
+        self.get_line_input_box().send_keys(Keys.ENTER)
+        self.wait_for_row_in_post_table(line_text, new_line_no)
+        return self
+
+    def get_share_box(self):
+        return self.test.browser.find_element(
+            By.CSS_SELECTOR,
+            'input[name="recipient"]',
+        )
+
+    def get_shared_with_list(self):
+        return self.test.browser.find_elements(
+            By.CSS_SELECTOR,
+            ".post-recipient"
+        )
+
+    def share_post_with(self, email):
+        self.get_share_box().send_keys(email)
+        self.get_share_box().send_keys(Keys.ENTER)
+        self.test.wait_for(
+            lambda: self.test.assertIn(
+                email, [item.text for item in self.get_shared_with_list()]
+            )
+        )
+
+    def get_post_owner(self):
+        return self.test.browser.find_element(By.ID, "id_post_owner").text