docs: v0.24.1 release notes

Co-authored-by: Alfonso [Magic Context] <288211368+alfonso-magic-context@users.noreply.github.com>

Author: ualtinok

.alfonso/release-notes/v0.24.1.md

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+# v0.24.1
+
+Patch release: a fix for session titles never generating, fewer cache busts, embedding-endpoint safety, calmer reduction reminders, and a persistent TUI sidebar.
+
+## Fixes
+
+- **Session titles generate again.** With the plugin enabled, a new session could keep the default `New session - <timestamp>` title forever (most visibly in non-git directories). Magic Context injects its compacted history as synthetic context messages, and those weren't flagged correctly, so OpenCode's auto-title step counted them as real user turns and skipped titling. The injected history is now marked synthetic — it still reaches the model, but no longer blocks the title. ([#129](https://github.com/cortexkit/magic-context/issues/129))
+
+- **No embedding under the wrong model.** When a local OpenAI-compatible endpoint (LM Studio, Ollama) serves a *different* embedding model than the one you configured — e.g. a shared endpoint where another tool keeps a smaller model loaded — the returned vectors have a different dimensionality and don't belong in your index. Magic Context now checks the model the endpoint reports and refuses mismatched vectors instead of silently corrupting the store. A clear log line names what was requested vs. served.
+
+- **Embedded history chunks no longer get truncated.** Chunks are now sized with a safety margin below the endpoint's input limit, so cross-tokenizer rounding can't push a chunk slightly over the limit and clip its tail.
+
+- **Two more prompt-cache busts removed.** (1) A stuck overflow-recovery flag could keep forcing a session to behave as if it were at the emergency ceiling — re-running cleanup every turn — after a `/ctx-recomp` had already relieved the pressure; the flag now clears when there's nothing left to compact and on a successful recomp. (2) A dropped older message could flip between two equivalent placeholder forms across passes, changing one block of the prompt prefix and re-billing the tail; the two placeholder paths now agree byte-for-byte.
+
+## Improvements
+
+- **Quieter, better-calibrated reduction reminders.** The reminder that nudges the agent to drop spent tool output was over-firing — it measured against the wrong budget, so a modest pile triggered "urgent" on a large-context model. It now scales against the agent's actual working window, ignores output that can't be dropped yet (the protected recent window), and is worded as advisory rather than a directive. If the agent has already reduced enough, approaching the threshold no longer nags it.
+
+- **Persistent TUI sidebar preferences.** The Magic Context sidebar can now remember its collapsed/expanded state across restarts, and you can reorder it, rename its header, or hide individual sections — via a shared `~/.config/opencode/tui-preferences.jsonc` file (one `magic-context` key). See the [TUI sidebar reference](https://docs.cortexkit.io/magic-context/reference/tui-sidebar/).
+
+## Also in this release
+
+- New documentation: **[why your token count can stay high after the execute threshold](https://docs.cortexkit.io/magic-context/concepts/context-reduction/#why-your-token-count-can-stay-high-after-the-threshold)** — the execute threshold compresses older conversation; tool outputs are reclaimed by `ctx_reduce` or the 85% safety net, not by the threshold itself.