test: port 44 vcs/downloader/version tests using mock infra

Port git, version_guesser, gitlab_driver, github_driver, and git_downloader
tests using the ProcessExecutor/HttpDownloader mocks and IO/Config stubs.
Fix production regex-porting bugs surfaced by the now-reachable paths:
Url::sanitize and Response::find_header_value had non-delimited PCRE patterns;
implement array_search_mixed non-strict branch and a datetime format mapping.
Add HttpDownloader::__new_mock so mocked downloaders skip curl construction.

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

2 files changed, 10 insertions, 8 deletions

diff --git a/crates/shirabe-php-shim/src/array.rs b/crates/shirabe-php-shim/src/array.rs
index 280ec64..ace6a72 100644
--- a/crates/shirabe-php-shim/src/array.rs
+++ b/crates/shirabe-php-shim/src/array.rs
@@ -233,20 +233,21 @@ pub fn array_search_mixed(
     haystack: &PhpMixed,
     strict: bool,
 ) -> Option<PhpMixed> {
-    if !strict {
-        // TODO(phase-c): non-strict array_search needs PHP's loose `==` comparison
-        // semantics. Only the strict path is implemented; loose comparison is
-        // deferred rather than approximated.
-        todo!("non-strict array_search (PHP loose comparison)");
-    }
+    let matches = |value: &PhpMixed| -> bool {
+        if strict {
+            value == needle
+        } else {
+            loose_eq(value, needle)
+        }
+    };
     match haystack {
         PhpMixed::List(items) => items
             .iter()
-            .position(|value| value == needle)
+            .position(matches)
             .map(|i| PhpMixed::Int(i as i64)),
         PhpMixed::Array(map) => map
             .iter()
-            .find(|(_, value)| *value == needle)
+            .find(|(_, value)| matches(value))
             .map(|(key, _)| php_key_to_mixed(key)),
         _ => None,
     }
diff --git a/crates/shirabe-php-shim/src/datetime.rs b/crates/shirabe-php-shim/src/datetime.rs
index bddf5da..e41028e 100644
--- a/crates/shirabe-php-shim/src/datetime.rs
+++ b/crates/shirabe-php-shim/src/datetime.rs
@@ -19,6 +19,7 @@ pub const DATE_ATOM: &str = DATE_RFC3339;
 pub fn date_format_to_strftime(format: &str) -> &'static str {
     match format {
         "Y-m-d H:i:s" => "%Y-%m-%d %H:%M:%S",
+        "Y-m-d Hi" => "%Y-%m-%d %H%M",
         "Y-m-d" => "%Y-%m-%d",
         "Ymd" => "%Y%m%d",
         other => panic!("Unsupported PHP date format: {other:?}"),