refactor: simplify rho symbol rebrand runtime (#339)

* fix: stop pointing agents at CLAUDE.md; AGENTS.md is the source of truth

rho's own guidance advertised CLAUDE.md alongside AGENTS.md. Since
AGENTS.md is now the single source of truth, drop it from:

- the adaptive system prompt ("Follow project-specific conventions
  documented in AGENTS.md and CLAUDE.md")
- the auto-init context-file gate and its doc comments
- `rho context export`

Also fixes a pre-existing bug in cmd/context_export.go: the instruction
file list was {"AGENTS.md", "AGENTS.md", "CLAUDE.md", ".rho.md"} --
AGENTS.md appeared twice, so it was read and emitted two times.

internal/rules and config.loadCrossAgentInstructions are deliberately
untouched: those are interop, letting users migrating from Claude Code,
Cursor, Copilot and Gemini import their existing rules into rho.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refactor: harden permissions and simplify CLI runtime

* refactor: simplify rho symbol rebrand runtime

* style: format rho sources

* chore: sync rho module metadata

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: Patel230

.dockerignore

@@ -54,10 +54,6 @@ indent_size = 4
 [{Makefile,*.mk}]
 indent_style = tab
 
-# Dockerfiles.
-[Dockerfile*]
-indent_size = 4
-
 # GitHub Actions workflows — 2 spaces.
 [.github/**/*.{yml,yaml}]
 indent_size = 2

.editorconfig

@@ -31,8 +31,6 @@
 # --- Build / packaging ----------------------------------------------------
 Makefile        text eol=lf
 *.mk            text eol=lf
-Dockerfile*     text eol=lf
-docker-compose*.yml text eol=lf
 .github/**/*.yml    text eol=lf
 .github/**/*.yaml   text eol=lf
 

.gitattributes

@@ -24,7 +24,6 @@
 /.github/        @GrayCodeAI/devops-team
 /Makefile        @GrayCodeAI/devops-team
 /.goreleaser.yml @GrayCodeAI/devops-team
-/Dockerfile      @GrayCodeAI/devops-team
 
 # Versioning + release artefacts
 /VERSION         @GrayCodeAI/maintainers

.github/CODEOWNERS

@@ -24,8 +24,8 @@
 
 <!--
   Describe how you tested. Paste output of `make test` and `make lint`. If you
-  added new tests, list them. If you could not run something locally (e.g.
-  Linux-only sandbox tests on macOS), call that out.
+  added new tests, list them. If you could not run something locally (for
+  example, a platform-specific integration test), call that out.
 -->
 
 ```text