docs: public-readiness — vibe-coded disclosure + genericize internal hosts

- README + CLAUDE.md: upfront "this is a vibe-coded project" disclosure for
  going public.
- Replace internal LAN hostnames (*.orgrimmar.dudenhoeffer.casa) with
  example.com across README, ADR-0004, the envproviders example, and env_test.go
  (assertions updated together; suite still green). Token was already a
  "change-me" placeholder, not a real secret.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -5,6 +5,13 @@ over many model providers, a parseable model naming / failover / tiering
 system with built-in health tracking, capability-aware multimodality, tool
 calls, structured output, and composable agents and skills.
 
+> ### 🤖 Heads up: this is a vibe-coded project
+> majordomo was built almost entirely by an AI agent (Claude Code) — design,
+> code, and docs. It is reasonably well-tested (a fully hermetic suite plus
+> gated live integration tests) and is used in earnest, but treat it
+> accordingly: read the code before depending on it, expect the occasional
+> AI-flavored rough edge, and please open issues. No warranty implied.
+
 > The [support matrix](#featureprovider-support-matrix) below is kept
 > honest: *pending* means not built, and this README is updated in the
 > same commit as the behavior it describes. Runnable programs for every
@@ -138,8 +145,8 @@ reg.RegisterProvider(openai.New(
 Define named providers entirely from the environment (go-llm parity):
 
 ```
-LLM_M1=foreman://test-token-change-me@foreman-m1.orgrimmar.dudenhoeffer.casa
-LLM_M5=foreman://test-token-change-me@foreman-m5.orgrimmar.dudenhoeffer.casa
+LLM_M1=foreman://test-token-change-me@foreman-m1.example.com
+LLM_M5=foreman://test-token-change-me@foreman-m5.example.com
 ```
 
 defines providers `m1` and `m5` (foreman targets — native Ollama wire