chore: reconcile Justfile/CONTRIBUTING references to Guix-only

RSR presence-checks (rhodibot, the-hotchocolabot Justfile + justfile) and
the skeleton dev-shell recipe now check guix.scm instead of flake.nix;
CONTRIBUTING's dev-shell command and repo-structure tree point at guix.scm.

https://claude.ai/code/session_016R5WsMHtpnD8bmrkjFNFmg

Author: claude

CONTRIBUTING.md

@@ -2,8 +2,8 @@
 git clone https://github.com/hyperpolymath/gitbot-fleet.git
 cd gitbot-fleet
 
-# Using Nix (recommended for reproducibility)
-nix develop
+# Using Guix (recommended for reproducibility)
+guix shell -D -f guix.scm
 
 # Or using toolbox/distrobox
 toolbox create gitbot-fleet-dev
@@ -41,7 +41,7 @@ gitbot-fleet/
 ├── MAINTAINERS.md
 ├── README.adoc
 ├── SECURITY.md
-├── flake.nix            # Nix flake (Perimeter 1)
+├── guix.scm             # Guix manifest (Perimeter 1)
 └── Justfile             # Task runner (Perimeter 1)
 ```
 

bots/rhodibot/Justfile

@@ -113,8 +113,8 @@ validate-rsr:
     for f in .well-known/security.txt .well-known/ai.txt .well-known/humans.txt; do
         [ -f "$f" ] || MISSING="$MISSING $f"
     done
-    if [ ! -f "guix.scm" ] && [ ! -f ".guix-channel" ] && [ ! -f "flake.nix" ]; then
-        MISSING="$MISSING guix.scm/flake.nix"
+    if [ ! -f "guix.scm" ] && [ ! -f ".guix-channel" ]; then
+        MISSING="$MISSING guix.scm"
     fi
     if [ -n "$MISSING" ]; then
         echo "MISSING:$MISSING"

bots/the-hotchocolabot/Justfile

@@ -195,7 +195,7 @@ rsr-check:
     @echo ""
     @echo "=== Build System ==="
     @test -f justfile && echo "✓ justfile" || echo "✗ justfile missing"
-    @test -f flake.nix && echo "✓ flake.nix" || echo "✗ flake.nix missing"
+    @test -f guix.scm && echo "✓ guix.scm" || echo "✗ guix.scm missing"
     @test -f .github/workflows/rust_ci.yml && echo "✓ CI/CD (GitHub Actions)" || echo "✗ CI/CD missing"
     @echo ""
     @echo "=== Test Coverage ==="

bots/the-hotchocolabot/justfile

@@ -195,7 +195,7 @@ rsr-check:
     @echo ""
     @echo "=== Build System ==="
     @test -f justfile && echo "✓ justfile" || echo "✗ justfile missing"
-    @test -f flake.nix && echo "✓ flake.nix" || echo "✗ flake.nix missing"
+    @test -f guix.scm && echo "✓ guix.scm" || echo "✗ guix.scm missing"
     @test -f .github/workflows/rust_ci.yml && echo "✓ CI/CD (GitHub Actions)" || echo "✗ CI/CD missing"
     @echo ""
     @echo "=== Test Coverage ==="

robot-repo-automaton/templates/skeleton/Justfile

@@ -572,9 +572,9 @@ guix-shell:
 guix-build:
     guix build -f guix.scm
 
-# Enter Nix development shell (fallback)
-nix-shell:
-    @if [ -f "flake.nix" ]; then nix develop; else echo "No flake.nix"; fi
+# Enter Guix development shell
+guix-shell:
+    @if [ -f "guix.scm" ]; then guix shell -D -f guix.scm; else echo "No guix.scm"; fi
 
 # ═══════════════════════════════════════════════════════════════════════════════
 # HYBRID AUTOMATION