Improve docs consistency and add repo verification scripts

Author: lucasbellesi

README.md

@@ -104,7 +104,7 @@ On Windows (MSYS2/MinGW), run `types_and_io_example.exe`.
 ### Windows + WSL example
 
 ```bash
-cd /mnt/d/REPOS/personal/learn-programming-languages-with-examples
+cd /path/to/learn-programming-languages-with-examples
 g++ -std=c++17 -Wall -Wextra -pedantic languages/cpp/01-foundations/types-and-io/example/main.cpp -o types_and_io_example
 ./types_and_io_example
 ```
@@ -131,6 +131,16 @@ Run one module example quickly:
 bash ./scripts/run-module.sh languages/cpp/01-foundations/strings
 ```
 
+Run full repository checks (links + C++ build):
+
+```powershell
+./scripts/verify-repo.ps1
+```
+
+```bash
+bash ./scripts/verify-repo.sh
+```
+
 ### Common First Errors
 
 - `g++: command not found`: install `g++` (MSYS2/MinGW on Windows or `g++` in WSL/Linux)

languages/cpp/01-foundations/formatted-output-and-iomanip/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o iomanip_example
 ./iomanip_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - `std::fixed` and `std::setprecision`.

languages/cpp/01-foundations/operators-and-expressions/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o operators_example
 ./operators_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Arithmetic operators (`+`, `-`, `*`, `/`, `%`).

languages/cpp/01-foundations/scope-and-lifetime-basics/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o scope_lifetime_exampl
 ./scope_lifetime_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Block scope (`{ ... }`).

languages/cpp/02-core/algorithms-basics/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o algorithms_basics_exa
 ./algorithms_basics_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Linear search.

languages/cpp/02-core/error-handling-and-defensive-programming/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o defensive_programming
 ./defensive_programming_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Defensive input validation.

languages/cpp/02-core/input-validation/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o input_validation_exam
 ./input_validation_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Detecting extraction failure (`if (!(cin >> value))`).

languages/cpp/03-advanced/constructors-and-invariants/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o constructors_invarian
 ./constructors_invariants_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Constructor initialization.

languages/cpp/03-advanced/copy-and-move-semantics/README.md

@@ -9,6 +9,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic example/main.cpp -o copy_move_example
 ./copy_move_example
 ```
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Copy constructor and copy assignment.

languages/cpp/04-expert/concurrency-basics/README.md

@@ -11,6 +11,11 @@ g++ -std=c++17 -Wall -Wextra -pedantic -pthread example/main.cpp -o concurrency_
 
 On Linux, `-pthread` is required for thread support.
 
+## More Examples
+
+- `example/main.cpp` is the primary runnable sample for this module.
+- Try one variation: copy it to `example/variation.cpp`, change one rule, and compare outputs.
+
 ## Topics Covered
 
 - Creating and joining threads with `std::thread`.