docs(changelog)+test: reconcile standard-Gemini native mode (#3569) — update round-2 rationale comment + log VPS validation

CHANGELOG.md

@@ -8,7 +8,8 @@
 
 ### 🔧 Bug Fixes
 
-- **fix(translator):** scope the Gemini `thoughtSignature` bypass to the Antigravity/CLI path and unwrap array-shaped Gemini error bodies — signature-less historical tool calls on Antigravity/CLI are emitted as native parts carrying the `skip_thought_signature_validator` sentinel (preventing upstream 400s), while the standard Gemini direct path keeps its existing text/context representation untouched. ([#3560](https://github.com/diegosouzapw/OmniRoute/pull/3560) — thanks @oyi77 and @Six7Day via [#3414](https://github.com/diegosouzapw/OmniRoute/pull/3414))
+- **fix(translator):** scope the Gemini `thoughtSignature` bypass to the Antigravity/CLI path and unwrap array-shaped Gemini error bodies — signature-less historical tool calls on Antigravity/CLI are emitted as native parts carrying the `skip_thought_signature_validator` sentinel (preventing upstream 400s). (The standard Gemini direct path was kept on text/context representation here, then switched to native by #3569 below.) ([#3560](https://github.com/diegosouzapw/OmniRoute/pull/3560) — thanks @oyi77 and @Six7Day via [#3414](https://github.com/diegosouzapw/OmniRoute/pull/3414))
+- **fix(translator):** the standard Gemini direct path now maps historical tool calls to **native** `functionCall`/`functionResponse` parts instead of inert text. The previous text serialization (`[tool_history_call: …]` / "Historical tool-call record only …") leaked into the model's visible output (the model echoed the annotation text). A live test against the real Gemini API confirmed thinking models accept signature-less native `functionCall` parts (`gemini-2.5-flash` returns 200 even with `tools` + `thinkingConfig`), so the text mode is no longer needed as the default and the leak is gone. The Antigravity/CLI sentinel path (#3560) is untouched. ([#3569](https://github.com/diegosouzapw/OmniRoute/pull/3569) — thanks @hartmark)
 - **fix(auto-update):** the self-update flow now resolves a stable project root instead of the launch directory — `resolveProjectRoot` walks up from the module's own location (`__dirname`) to the nearest `package.json`/`.git` rather than trusting `process.cwd()` (which could point anywhere the process was started from), and every `git`/`npm`/`pm2` step in `version/route.ts` runs against that `PROJECT_ROOT`. The original resolver fell through to `return cwd` on every branch, making `PROJECT_ROOT` a no-op; the walker (with TDD coverage) fixes that. ([#3561](https://github.com/diegosouzapw/OmniRoute/pull/3561) — thanks @oyi77; `PROJECT_ROOT` originally introduced + `version/route.ts` call sites wired in [#3423](https://github.com/diegosouzapw/OmniRoute/pull/3423) — thanks @ViFigueiredo)
 - **fix(plugins):** wire plugin lifecycle hooks (`onInstall`/`onActivate`/`onDeactivate`/`onUninstall`) in the loader so `manager.ts` can register them with `emitHook` — they were declared in the manifest schema and dispatched by the manager, but the loader never built the `plugin.onX` methods, leaving the lifecycle hooks declared-but-dead. Also addresses #3518 review comments (redundant `RegExp(/.../)` → literals, `logs/[id]` route awaits the Next route `params`, indentation). ([#3562](https://github.com/diegosouzapw/OmniRoute/pull/3562) — thanks @oyi77)
 

tests/unit/gemini-signatureless-text-mode.test.ts

@@ -1,12 +1,19 @@
 import test from "node:test";
 import assert from "node:assert/strict";
 
-// Regression guard for the gating between the standard-Gemini path and the
-// Antigravity/CLI bypass path (#3414/#3560 review). Standard Gemini (direct API,
-// the registered FORMATS.GEMINI translator uses mode "text") rejects the
-// thoughtSignature field AND signature-less native tool parts, so signature-less
-// historical tool calls/responses must be represented as inert TEXT (#3358).
-// Only the Antigravity/CLI bypass path emits native parts + the
+// Regression guard for the per-mode behavior of the OpenAI→Gemini translator
+// (#3414/#3560/#3569). History of the standard-Gemini path:
+//   - #3560 set the registered FORMATS.GEMINI translator to mode "text" on the
+//     assumption that thinking Gemini models reject signature-less native tool
+//     parts (400 "missing thought_signature").
+//   - #3569 changed the registered default to mode "native" after a live test
+//     against the real Gemini API (gemini-2.5-flash returns 200 for a
+//     signatureless historical functionCall, even with tools + thinkingConfig),
+//     which also removes the text-serialization leak (#3358).
+// These tests still pin the *per-mode* output shape: "text" mode keeps history as
+// inert text (no native parts, no sentinel — still available as an explicit mode),
+// and "native" mode emits a native functionCall with no fake signature. The
+// Antigravity/CLI bypass path is the only one that injects the
 // skip_thought_signature_validator sentinel.
 const { openaiToGeminiRequest } = await import(
   "../../open-sse/translator/request/openai-to-gemini.ts"