refactor: enhance CI/CD workflows and apply CodeRabbit suggestions

- Convert GitHub Actions from local to inline actions for better maintainability
- Add comprehensive caching for npm dependencies, tree-sitter CLI, and build artifacts
- Fix checkout steps missing in test matrix jobs
- Apply defensive programming in test coverage validation
- Use local tree-sitter CLI via npx instead of global installation
- Update tree-sitter-cli to v0.25.0 for compatibility with tree-sitter-bash
- Add proper tree-sitter field to package.json with grammar metadata
- Fix grammar precedence for Data blocks (#| lines now have higher precedence)
- Standardize dates in memory files to September 12, 2025
- Enhance workflow robustness with dynamic workflow ID resolution
- Improve test file pattern matching and error handling

This commit addresses all CodeRabbit review suggestions and optimizes
GitHub Actions workflows for better performance and reliability.

grammar.js

@@ -124,9 +124,9 @@ module.exports = grammar(bashGrammar, {
     // ShellSpec Data blocks with advanced syntax support
     shellspec_data_block: ($) =>
       choice(
-        // Block style with #| lines
+        // Block style with #| lines - highest precedence to ensure #| lines are parsed correctly
         prec.right(
-          4,
+          5,
           seq(
             "Data",
             optional(seq(":", field("modifier", choice("raw", "expand")))),
@@ -140,9 +140,9 @@ module.exports = grammar(bashGrammar, {
             "End",
           ),
         ),
-        // Block style with regular statements - highest precedence to ensure End is captured
+        // Block style with regular statements
         prec.right(
-          5,
+          4,
           seq(
             "Data",
             optional(seq(":", field("modifier", choice("raw", "expand")))),