derive_tools 0.70.1

A collection of derive macros designed to enhance STD.
Documentation
# Task: Postpone `no_std` refactoring for `pth` and `error_tools`

### Goal
*   Document the decision to postpone `no_std` refactoring for `pth` and `error_tools` crates, and track this as a future task.

### Ubiquitous Language (Vocabulary)
*   **`pth`:** The path manipulation crate.
*   **`error_tools`:** The error handling crate.
*   **`no_std`:** A Rust compilation mode where the standard library is not available.

### Progress
*   **Roadmap Milestone:** M0: Foundational `no_std` compatibility (Postponed)
*   **Primary Target Crate:** `module/core/derive_tools`
*   **Overall Progress:** 0/1 increments complete
*   **Increment Status:**
    *   ⚫ Increment 1: Document postponement

### Permissions & Boundaries
*   **Run workspace-wise commands:** false
*   **Add transient comments:** true
*   **Additional Editable Crates:**
    *   N/A

### Relevant Context
*   N/A

### Expected Behavior Rules / Specifications
*   A new task file will be created documenting the postponement.

### Crate Conformance Check Procedure
*   N/A

### Increments

##### Increment 1: Document postponement
*   **Goal:** Create this task file to formally document the postponement of `no_std` refactoring.
*   **Specification Reference:** User instruction to postpone `no_std` refactoring.
*   **Steps:**
    *   Step 1: Create this task file.
*   **Increment Verification:**
    *   The task file exists.
*   **Commit Message:** `chore(no_std): Postpone no_std refactoring for pth and error_tools`

### Task Requirements
*   The decision to postpone `no_std` refactoring must be clearly documented.

### Project Requirements
*   (Inherited from workspace `Cargo.toml`)

### Assumptions
*   The `derive_tools` task can proceed without `no_std` compatibility for `pth` and `error_tools` at this stage.

### Out of Scope
*   Performing the actual `no_std` refactoring.

### External System Dependencies (Optional)
*   N/A

### Notes & Insights
*   The `no_std` refactoring is a complex task that requires dedicated effort and is being deferred to a later stage.

### Changelog