Fix project isolation: Make loadChatHistory respect active project sessions

- Modified loadChatHistory() to check for active project before fetching all sessions
- When active project exists, use project.sessions instead of fetching from API
- Added detailed console logging to debug session filtering
- This prevents ALL sessions from appearing in every project's sidebar

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.venv/lib/python3.11/site-packages/markdown_it/rules_block/hr.py

@@ -0,0 +1,56 @@
+"""Horizontal rule
+
+At least 3 of these characters on a line * - _
+"""
+
+import logging
+
+from ..common.utils import isStrSpace
+from .state_block import StateBlock
+
+LOGGER = logging.getLogger(__name__)
+
+
+def hr(state: StateBlock, startLine: int, endLine: int, silent: bool) -> bool:
+    LOGGER.debug("entering hr: %s, %s, %s, %s", state, startLine, endLine, silent)
+
+    pos = state.bMarks[startLine] + state.tShift[startLine]
+    maximum = state.eMarks[startLine]
+
+    if state.is_code_block(startLine):
+        return False
+
+    try:
+        marker = state.src[pos]
+    except IndexError:
+        return False
+    pos += 1
+
+    # Check hr marker
+    if marker not in ("*", "-", "_"):
+        return False
+
+    # markers can be mixed with spaces, but there should be at least 3 of them
+
+    cnt = 1
+    while pos < maximum:
+        ch = state.src[pos]
+        pos += 1
+        if ch != marker and not isStrSpace(ch):
+            return False
+        if ch == marker:
+            cnt += 1
+
+    if cnt < 3:
+        return False
+
+    if silent:
+        return True
+
+    state.line = startLine + 1
+
+    token = state.push("hr", "hr", 0)
+    token.map = [startLine, state.line]
+    token.markup = marker * (cnt + 1)
+
+    return True