refactor(stage-1): eliminate dead parse_text, simplify task progress SQL, remove prompt hacks

app/ai.py

@@ -74,10 +74,6 @@ def get_sentence_dictionary_hints(sentence: str, target_word: str = "") -> str:
         return ""
 
     hints = []
-    special_guidance = {
-        "owl": "owl — это сова/неясыть (ни в коем случае НЕ орёл!)",
-        "tawny owl": "tawny owl — это сова/неясыть (птица семейства совиных, ни в коем случае НЕ орёл!)",
-    }
 
     try:
         with get_db() as conn:
@@ -98,11 +94,7 @@ def get_sentence_dictionary_hints(sentence: str, target_word: str = "") -> str:
                     continue
                 seen_terms.add(cand)
                 trans = matched_dict[cand]
-                guidance = special_guidance.get(cand, "")
-                if guidance:
-                    hints.append(f"- {cand}: {trans} (ВНИМАНИЕ: {guidance})")
-                else:
-                    hints.append(f"- {cand}: {trans}")
+                hints.append(f"- {cand}: {trans}")
 
                 if len(hints) >= 8:
                     break

app/reader.py

@@ -286,44 +286,6 @@ def split_long_text(text: str, target_words: int = 3000) -> List[str]:
 
     return chunks
 
-
-def parse_text(content: str, title: str = "Untitled", author: str = "") -> Tuple[str, str, List[Dict[str, str]]]:
-    """
-    Parses plain text or Markdown into readable chapters.
-    Splits by explicit chapter markers (e.g. 'Chapter X', '# Chapter') or chunks of ~3000 words.
-    """
-    content = content.replace("\r\n", "\n").replace("\r", "\n").strip()
-    if not content:
-        return title, author, [{"title": title if title != "Untitled" else "Chapter 1", "content": ""}]
-
-    lines = content.split("\n")
-    first_line = lines[0].strip()
-
-    # Extract title from first line or # Heading / <h1...> if default or generic README
-    if title == "Untitled" or title.lower().startswith("readme"):
-        if first_line.startswith("# "):
-            title = first_line.lstrip("# ").strip()
-            if len(lines) > 1:
-                content = "\n".join(lines[1:]).strip()
-        elif first_line.lower().startswith("title:"):
-            title = first_line.split(":", 1)[1].strip()
-            if len(lines) > 1:
-                content = "\n".join(lines[1:]).strip()
-        else:
-            h1_match = re.search(r"<h1[^>]*>(.*?)</h1>", content[:1500], re.IGNORECASE)
-            if h1_match:
-                detected = re.sub(r"<[^>]+>", "", h1_match.group(1)).strip()
-                if detected:
-                    title = detected
-
-    # Extract author from next line if missing
-    if not author:
-        lines = content.split("\n")
-        if lines and lines[0].lower().startswith(("author:", "by:")):
-            author = lines[0].split(":", 1)[1].strip()
-            if len(lines) > 1:
-                content = "\n".join(lines[1:]).strip()
-
 def detect_text_headings(content: str) -> List[Dict]:
     """
     Detects section and chapter headings with high accuracy across Markdown,

app/tasks.py

@@ -49,54 +49,24 @@ def update_task_progress(
     """
     Updates the progress and status of a running task.
     """
-    if total is not None and message is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                progress_total = ?,
-                message = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, total, message, task_id),
-        )
-    elif total is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                progress_total = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, total, task_id),
-        )
-    elif message is not None:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                message = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, message, task_id),
-        )
-    else:
-        conn.execute(
-            """
-            UPDATE background_tasks
-            SET status = 'running',
-                progress_current = ?,
-                updated_at = CURRENT_TIMESTAMP
-            WHERE id = ? AND status != 'cancelled'
-            """,
-            (current, task_id),
-        )
+    set_clauses = ["status = 'running'", "progress_current = ?", "updated_at = CURRENT_TIMESTAMP"]
+    params: List[Any] = [current]
+
+    if total is not None:
+        set_clauses.append("progress_total = ?")
+        params.append(total)
+
+    if message is not None:
+        set_clauses.append("message = ?")
+        params.append(message)
+
+    params.append(task_id)
+    sql = f"""
+        UPDATE background_tasks
+        SET {', '.join(set_clauses)}
+        WHERE id = ? AND status != 'cancelled'
+    """
+    conn.execute(sql, params)
 
 
 def complete_task(