Two robustness fixes the Bazel pilot surfaced

scripts/campfire-oracle

@@ -236,12 +236,15 @@ cmd_prepare() {
     [[ -d "$APP" ]] || die "no campfire checkout at $APP"
     command -v sqlite3 >/dev/null || die "sqlite3 not on PATH"
 
-    local sha
-    sha="$(git -C "$APP" rev-parse HEAD 2>/dev/null || echo unknown)"
+    local sha=unknown tracked=
+    # Not a bare rev-parse: a tarball checkout inside another repository (Bazel's execroot links .git) would archive that one.
+    if [[ "$(git -C "$APP" rev-parse --show-toplevel 2>/dev/null)" == "$(cd "$APP" && pwd -P)" ]]; then
+        tracked=1; sha="$(git -C "$APP" rev-parse HEAD)"
+    fi
 
     step "exporting $APP @ ${sha:0:12} -> $OUT"
     rm -rf "$OUT"; mkdir -p "$OUT"
-    if git -C "$APP" rev-parse HEAD >/dev/null 2>&1; then
+    if [[ -n "$tracked" ]]; then
         # git archive: tracked files only, no local litter.
         (cd "$APP" && git archive HEAD) | tar -x -C "$OUT"
     else

tests/overlay_cable_dispatch.rb

@@ -51,8 +51,10 @@ def self.application = @application ||= Struct.new(:global_id_app, :secret_key_b
 load "#{root}/runtime/ruby/action_controller/message_verifier.rb"
 
 # action_cable.rb's one require; the transport half is not under test.
-$LOADED_FEATURES << File.expand_path(
-  "#{root}/runtime/spinel/scaffold/ruby_overlay/runtime/broadcasts.rb"
+# Not expand_path: require_relative resolves symlinks, so under a symlinked tree (Bazel's runfiles) the paths differ.
+$LOADED_FEATURES << File.join(
+  File.dirname(File.realpath("#{root}/runtime/spinel/scaffold/ruby_overlay/runtime/action_cable.rb")),
+  "broadcasts.rb"
 )
 module Broadcasts
   LOG = []
@@ -69,7 +71,7 @@ module Broadcasts
 # Loading the spinel action_cable here would replace `Channel::Base` with
 # the sibling whose methods raise — a green run against the wrong file.
 %w[action_cable base64 broadcasts].each do |sibling|
-  $LOADED_FEATURES << File.expand_path("#{root}/runtime/spinel/#{sibling}.rb")
+  $LOADED_FEATURES << File.join(File.dirname(File.realpath("#{root}/runtime/spinel/turbo_streams.rb")), "#{sibling}.rb")
 end
 load "#{root}/runtime/spinel/turbo_streams.rb"
 load "#{root}/runtime/spinel/global_id_locator.rb"

tests/overlay_cable_identity.rb

@@ -29,8 +29,10 @@ def self.application = @app ||= Application.new("a" * 64)
 load "#{root}/runtime/spinel/cgi_io.rb"
 
 # action_cable.rb's one require; the transport half is not under test.
-$LOADED_FEATURES << File.expand_path(
-  "#{root}/runtime/spinel/scaffold/ruby_overlay/runtime/broadcasts.rb"
+# Not expand_path: require_relative resolves symlinks, so under a symlinked tree (Bazel's runfiles) the paths differ.
+$LOADED_FEATURES << File.join(
+  File.dirname(File.realpath("#{root}/runtime/spinel/scaffold/ruby_overlay/runtime/action_cable.rb")),
+  "broadcasts.rb"
 )
 module Broadcasts
   LOG = []