feat: Provider/Mistral full support for Mistral on OpenClaw 🇫🇷 (#23845)

* Onboard: add Mistral auth choice and CLI flags

* Onboard/Auth: add Mistral provider config defaults

* Auth choice: wire Mistral API-key flow

* Onboard non-interactive: support --mistral-api-key

* Media understanding: add Mistral Voxtral audio provider

* Changelog: note Mistral onboarding and media support

* Docs: add Mistral provider and onboarding/media references

* Tests: cover Mistral media registry/defaults and auth mapping

* Memory: add Mistral embeddings provider support

* Onboarding: refresh Mistral model metadata

* Docs: document Mistral embeddings and endpoints

* Memory: persist Mistral embedding client state in managers

* Memory: add regressions for mistral provider wiring

* Gateway: add live tool probe retry helper

* Gateway: cover live tool probe retry helper

* Gateway: retry malformed live tool-read probe responses

* Memory: support plain-text batch error bodies

* Tests: add Mistral Voxtral live transcription smoke

* Docs: add Mistral live audio test command

* Revert: remove Mistral live voice test and docs entry

* Onboard: re-export Mistral default model ref from models

* Changelog: credit joeVenner for Mistral work

* fix: include Mistral in auto audio key fallback

* Update CHANGELOG.md

* Update CHANGELOG.md

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Co-authored-by: Shakker <shakkerdroid@gmail.com>

docs/reference/api-usage-costs.md

@@ -67,6 +67,7 @@ Semantic memory search uses **embedding APIs** when configured for remote provid
 - `memorySearch.provider = "openai"` → OpenAI embeddings
 - `memorySearch.provider = "gemini"` → Gemini embeddings
 - `memorySearch.provider = "voyage"` → Voyage embeddings
+- `memorySearch.provider = "mistral"` → Mistral embeddings
 - Optional fallback to a remote provider if local embeddings fail
 
 You can keep it local with `memorySearch.provider = "local"` (no API usage).