docs(release): add v1.0.30 series notes

.github/releases/v1.0.30.md

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+## opencode {VERSION}
+
+{Prerelease/Stable} release from `{branch}` branch. Headless `/init` now stamps project initialization, so MEMORY works from `opencode run` and SDK text prompts, not just the TUI.
+
+---
+
+### 🐛 Bug Fixes
+
+- **Headless `/init` never stamped project initialization, #404 (PR #405)**: `opencode run "/init"` and serve `POST /session/:id/message` text prompts delivered slash commands as plain text - command routing existed only in the TUI client, so `SessionPrompt.command` never ran, `Command.Event.Executed` never fired, and `project.time_initialized` stayed NULL, leaving MEMORY fail-closed inert with no hint. The server-side prompt endpoints (`prompt` and `promptAsync`) now route single-text-part prompts that name a registered command through the command lifecycle; a registry miss falls through to the plain prompt, preserving existing text-prompt semantics. The TUI `/command` path is unchanged.
+
+---
+
+### 🧪 Test Summary
+
+```
+CI gates on the dev-to-main promotion:
+Typecheck:           pass
+Unit Tests (linux):  pass
+E2E Tests (linux):   pass
+E2E Tests (windows): pass
+SpecGit Acceptance:  pass
+```
+
+---
+
+### 🔍 Verification
+
+- The regression is pinned by `test/cli/run/headless-init.test.ts`: four subprocess arms - `opencode run "/init"` and serve message text `/init` (both RED on the parent commit), plus `run --command init` and serve `/command` controls - assert a non-NULL `time_initialized` in the isolated project database.
+- End-to-end verification spawned the CLI from source on a fresh git repo with an isolated HOME and confirmed the stamp lands on the `opencode run "/init"` path; the fix was delivered through the specgit harness with an accepted verdict on PR #405.
+
+---
+
+**Full changelog:** [`{previous_tag}`...`{current_tag}`](https://github.com/LeXwDeX/OpenCode-GraphAgent/compare/{previous_tag}...{current_tag})