diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4f810f..6002af2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,63 @@ All notable changes to `simplicio-prompt` are documented here.
 Format roughly follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/);
 versioning is [SemVer](https://semver.org/).
 
+## [1.11.0] — 2026-05-29 — Phase 1 + integration + infra
+
+Roadmap **Phase 1 (Diverse-prompt fan-out)** kernel-side delivery plus the
+tech-debt and infrastructure work that landed alongside it. All new
+runtime parameters are opt-in; defaults preserve the 1.10.x behavior
+bit-for-bit, so this is a semver-safe minor bump.
+
+### Added
+- **`kernel.diversifier`** (Phase 1) — `Persona`, `PromptDiversifier`, and
+  `make_diversified_prompt_builder` for deterministic persona-based prompt
+  variants. 4 framings × 3 emphases × 3 host-code stances = 36 unique
+  combinations; for N > 36, base personas cycle with a rotation counter
+  folded into the slug so the input bytes still differ on every pass.
+  Closes #29 (kernel side; output-side validation pending bench in
+  `simplicio-dev-cli`).
+- **`SubagentRuntime.run(diversify=True, diversify_seed=0)`** — opt-in
+  flag that wraps the prompt builder so each subagent's `system` message
+  is prepended with a unique persona directive. The `prompt` field stays
+  intact, so structured contracts (e.g. simplicio-cli `[CLI-6LAYER]`)
+  compose cleanly.
+- **`SubagentRuntime.run(overall_timeout_s=...)`** — global wall-clock
+  timeout for the entire fan-out. Env-var fallback
+  `YOOL_TUPLE_OVERALL_TIMEOUT_S`. Closes #35.
+- **`FanoutReport.status`** — `"ok"` | `"timeout"`. Carried through
+  `to_dict()` and `format_summary()` (`[TIMEOUT]` prefix when not ok).
+- **CLI flags:** `--diversify`, `--diversify-seed`, `--overall-timeout-s`.
+- **`tests/test_diversifier.py`** — 22 tests pinning slug format,
+  rotation, base catalog completeness, n=1/36/37/200 sizes, determinism,
+  seed permutation, wrapped-builder semantics, empty-system handling.
+- **`tests/targets.test.mjs`** — 13 unit tests blindando the multi-IDE
+  plugin registry (`plugins/targets.mjs`). Closes #36.
+- **`benchmarks/diversifier_benchmark.py`** — input-side uniqueness lift
+  measurement (200x in the realistic static-contract case).
+- **`.github/workflows/tests.yml`** + **`.github/workflows/release.yml`** —
+  matrix CI (Python 3.10/3.11/3.12) on push/PR, and a tag-driven release
+  pipeline that does the cross-version check + PyPI/npm publish + smoke
+  verify automatically. Closes #33.
+- **`CONTRIBUTING.md`** — canonical local-dev, release, and prompt-edit
+  flow. Closes #38.
+
+### Changed
+- **`kernel/utils` is now actually wired into the runtime hot paths**:
+  - `kernel/yool_tuple_kernel.py::ReceiptCache` consolidated into
+    `kernel/utils/cache.py::TTLCache` (BC alias preserved).
+  - `kernel/yool_tuple_kernel.py::_stable_digest` delegates to
+    `kernel.utils.serialization.stable_digest`.
+  - `kernel/providers.py` JSON I/O routes through
+    `kernel.utils.serialization.{dumps_bytes, loads}` — `pip install orjson`
+    now silently accelerates the runtime. Closes #32.
+
+### Fixed
+- **`bin/simplicio-prompt.mjs::loadVersion`** no longer silently returns
+  `"0.0.0"` on corrupted `package.json`; it logs the reason to stderr
+  before falling back. Top-level catch falls through `e.message ||
+  String(e)` so non-Error throws never print the literal `"undefined"`.
+  Closes #37.
+
 ## [1.10.1] — 2026-05-29 — Phase 0: ONE-SHOT template hygiene
 
 Roadmap **Phase 0 (Hygiene + repositioning)** — see `Roadmap to v2.0` in the
diff --git a/kernel/__init__.py b/kernel/__init__.py
index 7044121..5a83f57 100644
--- a/kernel/__init__.py
+++ b/kernel/__init__.py
@@ -7,4 +7,4 @@
 ``batch_spawn`` model into real subagents.
 """
 
-__version__ = "1.10.1"
+__version__ = "1.11.0"
diff --git a/package.json b/package.json
index a1fd4dd..4749bda 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "simplicio-prompt",
-  "version": "1.10.1",
+  "version": "1.11.0",
   "description": "Multi-IDE plugin: Tuple-Space + Yool safe-speed runtime prompt for Claude Code, Codex, Hermes, OpenCode/OpenClaw, Cursor, GitHub Copilot, Cline, Aider, Gemini CLI. One installer drops the runtime contract into the right rule file for each agent; the Claude Code plugin ships a UserPromptSubmit hook for always-on invocation. Includes a dependency-free Python runtime for real subagents on DeepSeek / MiMo / OpenRouter / local LLMs plus PromptFanout adapters and token/cost observability.",
   "type": "module",
   "main": "./index.mjs",
diff --git a/pyproject.toml b/pyproject.toml
index d43ccbc..28167b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "simplicio-prompt"
-version = "1.10.1"
+version = "1.11.0"
 description = "Tuple-Space + Yool safe-speed runtime kernel: lazy 1,000,000+ subagent batch_spawn, adaptive lane concurrency, and a dependency-free OpenAI-compatible provider client for real subagents on DeepSeek / MiMo / OpenRouter / local LLMs."
 readme = "README.md"
 requires-python = ">=3.8"