[Caching] Relativize only project-path options in the cache hash, not every parameter

hashForCacheInvalidation() walked all strict parameters and stripped the cwd prefix from any string that happened to start with it. Scope it to the path-bearing options (paths, autoload paths, bootstrap files) via CACHE_PROJECT_PATH_PARAMETER_NAMES, so relativizing is intentional rather than incidental.

Author: TomasVotruba

src/Configuration/Parameter/SimpleParameterProvider.php

@@ -62,6 +62,17 @@ final class SimpleParameterProvider
         Option::SKIP,
     ];
 
+    /**
+     * Absolute-path options anchored to the project before hashing, so a checkout at a different
+     * path is not read as a changed configuration.
+     * @var array<Option::*>
+     */
+    private const array CACHE_PROJECT_PATH_PARAMETER_NAMES = [
+        Option::PATHS,
+        Option::AUTOLOAD_PATHS,
+        Option::BOOTSTRAP_FILES,
+    ];
+
     /**
      * @var array<string, mixed>
      */
@@ -155,9 +166,21 @@ public static function hashForCacheInvalidation(): string
             unset($strictParameters[$ignoredName]);
         }
 
+        $projectPathPrefix = self::projectPathPrefix();
+        foreach (self::CACHE_PROJECT_PATH_PARAMETER_NAMES as $pathParameterName) {
+            if (! isset($strictParameters[$pathParameterName]) || ! is_array($strictParameters[$pathParameterName])) {
+                continue;
+            }
+
+            $strictParameters[$pathParameterName] = self::relativizeProjectPaths(
+                $strictParameters[$pathParameterName],
+                $projectPathPrefix
+            );
+        }
+
         ksort($strictParameters);
 
-        return sha1(serialize(self::relativizeProjectPaths($strictParameters, self::projectPathPrefix())));
+        return sha1(serialize($strictParameters));
     }
 
     /**
@@ -185,12 +208,8 @@ public static function provideCacheDirectionalParameters(): array
     }
 
     /**
-     * Paths declared in the configuration - analysed paths, autoload and bootstrap files, set
-     * files - are absolute, so they carry the location of the project into the cache identity.
-     * Hashed as they are, the cache is bound to one directory: a git worktree, a second
-     * checkout or a CI cache restored under a different workspace name looks like a changed
-     * configuration and drops every entry on its first run. Anchored to the project instead,
-     * they describe the same configuration wherever it is checked out.
+     * Strips the project prefix off absolute config paths, so the same configuration hashes alike
+     * across checkouts instead of tying the cache to one directory.
      *
      * @param mixed[] $parameters
      * @return mixed[]