release notes: v0.32.3

Co-authored-by: Alfonso <alfonso@cortexkit.io>

Author: ualtinok

.alfonso/release-notes/v0.32.3.md

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+# v0.32.3
+
+Patch release focused on prompt-cache cost around history compaction boundaries.
+
+## Cache stability
+
+- Fixed a double cache bust that occurred when the compaction boundary advanced on large sessions: the pass that moved the boundary and the following pass could serve different renderings of the summary marker, paying an avoidable full-prefix re-read (typically 100K+ tokens) on every boundary move. The marker representation is now reconciled deterministically on every pass, so a boundary move costs exactly one bust.
+- Marker rows are now written with deterministic identifiers, making retries after interrupted writes converge on the same rows instead of duplicating them.
+- Concurrent processes sharing a session (for example a TUI attached alongside a running server) now serve identical marker renderings instead of briefly diverging.
+
+## Fixes
+
+- The synthetic history head is identified structurally rather than by metadata, preventing mispositioned summary markers next to system-delivered notices.
+- Sessions without a frozen ctx_reduce availability verdict no longer render a tagged summary marker that could change once the verdict settles.