feat(python): decode CPython 3.14 and 3.15 pyc code objects

Decode marshal slice constants from magic 3608 onward and pin the 3.11 code
layout and inline-cache tables for the 3.14 and 3.15 magics.

Refs #8206

src/cli/pythonPycCommands.ts

@@ -24,7 +24,7 @@ export const registerPythonPycCommands = (
 ): void => {
   cli.command(CLI_COMMANDS.inspectPythonPyc, {
     description:
-      "Inspect a supported CPython 3.7–3.13 pyc header and marshal code objects without executing bytecode",
+      "Inspect a supported CPython 3.7–3.15 pyc header and marshal code objects without executing bytecode",
     args: z.object({
       path: localPathStringSchema.describe("Local CPython .pyc file"),
     }),