Fix profile updates to target named sections at session end

Previously the session-end protocol told the AI to update profile.md
if new insights emerged, with no guidance on where. Over many sessions
this caused freeform bold-text entries to accumulate without structure.

Now requires each update to match an existing H2 section in the file,
with explicit rules against creating new top-level sections.

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

CHANGELOG.md

@@ -4,6 +4,13 @@ All notable changes to Inner Dialogue.
 
 ---
 
+## [2.1.2] - 2026-05-09
+
+### Fixed
+- **Profile updates now target specific sections** — At session end, the AI must match each update to an existing H2 section in `profile.md` rather than appending freeform. Prevents `profile.md` from accumulating unstructured content over many sessions.
+
+---
+
 ## [2.1.1] - 2026-02-08
 
 ### Fixed