release notes: v0.35.0 draft

Author: ualtinok

.alfonso/release-notes/v0.35.0.md

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+# Magic Context v0.35.0
+
+## Prompt-surface presets (#268)
+
+The agent-facing prompt surface (guidance block + ctx_* tool descriptions) is now configurable. The existing surface is unchanged and remains the default; a new `light` preset delivers the same rules at roughly half the tokens (~1.8k vs ~3.7k), verified rule-by-rule against a 49-rule checklist and validated on weaker models before shipping.
+
+```jsonc
+{
+  "prompt_surface": {
+    "default": "full",
+    "models": { "anthropic/claude-opus-4-6": "light" }
+  }
+}
+```
+
+- `default`: `"full"` (unchanged surface) or `"light"`.
+- `models`: per-model routing (`provider/model` or `provider/*`). On OpenCode and Pi this routes the guidance block; tool descriptions follow `default` (plugin v1 registers tools once per process — per-model tool descriptions are planned for the OpenCode v2 plugin API, tracked in #260).
+- `guidance_override_path` / `tool_descriptions`: user-level custom overrides for the guidance section and per-tool description text.
+- Preset changes ride the normal prompt-cache bust path; upgrading with no config sees byte-identical prompts and no cache impact.
+
+## Fixes
+
+- Historian fold boundaries, validation, and manual wrapup now keep completed tool invocation/result pairs atomic — a boundary can no longer separate a tool call from its result (the class behind rare provider 400s on folded sessions; fixed across OpenCode, Pi, and the Rust module).
+- Dreamer verify tasks now classify provider-outage responses as transient provider failures instead of manifest validation errors, retry with backoff, and abort a run after repeated identical provider failures instead of failing every remaining batch. Banked verification progress survives an outage and resumes.
+- verify-broad runs as a resumable cycle on large memory pools: progress banks incrementally across runs instead of restarting and timing out every week.
+- compress-cues no longer wedges on memories that reference GitHub issue/PR numbers, and terminates cleanly after repeated rejections.
+- Mural cue compression works on projects running module memory authority.
+- Synthetic todo state is preserved across turns where the model makes no tool calls (Rust transform mode).
+- Windows: stale RPC discovery files from PID reuse or unreadable port files no longer block database migrations (completes the #281 fix).
+
+## Behavior notes
+
+- `cache_ttl` per-model matching now uses the same lookup walk as `prompt_surface.models`: exact key → bare model id → progressive suffix-stripping → `provider/*` wildcard → `default`. Configs that previously carried an inert `provider/*` cache_ttl key will now match it.
+- The deprecated `experimental.mural` config key migrates in place to top-level `mural`; run `doctor` to persist.