docs: fix remaining broken links in documentation

- Fix ./placeholder-bdd to ./placeholders in BDD workflow docs
- Fix ./tdd/ to /workflows/tdd/ in understanding-reports.md
- Fix ../getting-started to /tutorials/getting-started
- Fix ../first-bidirectional-link to /tutorials/first-bidirectional-link

Author: claude

docs/tutorials/understanding-reports.md

@@ -235,5 +235,5 @@ Methods can be covered by both unit and integration tests.
 Now that you understand reports:
 
 - [Run Validation in CI](/how-to/run-validation-in-ci) - Automate validation
-- [TDD Workflow](./tdd/) - Learn when to add links during development
+- [TDD Workflow](/workflows/tdd/) - Learn when to add links during development
 - [Fix Validation Errors](/how-to/fix-validation-errors) - Resolve common issues

docs/workflows/bdd/acceptance-to-unit.md

@@ -468,5 +468,5 @@ Acceptance: Order is fulfilled
 
 ## What's Next?
 
-- [Placeholder BDD](./placeholder-bdd) - Use placeholders during BDD
+- [Placeholder BDD](./placeholders) - Use placeholders during BDD
 - [Complete Example](./complete-example) - Full BDD example with shopping cart

docs/workflows/bdd/double-loop.md

@@ -584,4 +584,4 @@ Link Summary
 ## What's Next?
 
 - [Acceptance to Unit](./acceptance-to-unit) - More patterns for driving unit tests
-- [Placeholder BDD](./placeholder-bdd) - Using placeholders in BDD workflows
+- [Placeholder BDD](./placeholders) - Using placeholders in BDD workflows

docs/workflows/bdd/index.md

@@ -51,7 +51,7 @@ TestLink adds traceability to BDD workflows:
 |----------|-------------------|
 | [Double-Loop TDD](./double-loop) | The outer acceptance loop and inner unit loop |
 | [Acceptance to Unit](./acceptance-to-unit) | Driving unit tests from acceptance tests |
-| [Placeholder BDD](./placeholder-bdd) | Using placeholders in BDD workflows |
+| [Placeholder BDD](./placeholders) | Using placeholders in BDD workflows |
 | [Complete Example](./complete-example) | Build a ShoppingCart feature using BDD |
 
 ## Quick Example

docs/workflows/tdd/index.md

@@ -96,8 +96,8 @@ See [How-to: Sync Links Automatically](/how-to/sync-links-automatically) for det
 
 Before starting these tutorials:
 
-- Complete [Getting Started](../getting-started)
-- Complete [Your First Bidirectional Link](../first-bidirectional-link)
+- Complete [Getting Started](/tutorials/getting-started)
+- Complete [Your First Bidirectional Link](/tutorials/first-bidirectional-link)
 - Have a basic understanding of TDD concepts
 
 Ready to begin? Start with [Red-Green-Refactor](./red-green-refactor)!

docs/workflows/tdd/red-green-refactor.md

@@ -8,7 +8,7 @@ We'll build a `StringCalculator` class that adds numbers from a string input. Th
 
 ## Prerequisites
 
-- Completed [Getting Started](../getting-started)
+- Completed [Getting Started](/tutorials/getting-started)
 - TestLink installed in your project
 
 ## The TDD Cycle with Links