chore(nix->guix): delete Nix estate-wide (#138) (#59)

Automated sweep to eradicate Nix from the estate as Guix is now the sole
reproducible environment.

Author: hyperpolymath

.envrc

@@ -14,7 +14,6 @@ fi
 
 # Load Nix flake if flake.nix exists
 if has nix && [ -f flake.nix ]; then
-  use flake
 fi
 
 # Project environment variables

.github/workflows/governance.yml

@@ -13,4 +13,4 @@ permissions:
 
 jobs:
   governance:
-    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9
+    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9

.github/workflows/hypatia-scan.yml

@@ -16,4 +16,4 @@ permissions:
 
 jobs:
   scan:
-    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9
+    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@81dbf2dd854b1444fd6236fa2352474383b2c2b9

.github/workflows/secret-scanner.yml

@@ -18,4 +18,4 @@ jobs:
     permissions:
       contents: read
     uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@c65436ee3351cd6b0fa14b142938b195efc77586
-    secrets: inherit
+    secrets: inherit

.github/workflows/static-analysis-gate.yml

@@ -325,4 +325,4 @@ jobs:
 
           Findings saved as \`unified-findings\` artifact.
           The gitbot-fleet scanner will ingest these on its next pass.
-          EOF
+          EOF