fix: Update implement.md.j2 navigation guide after content expansion

## Changes

Updated all line numbers in navigation guide to reflect content expansion:

- File size: 1049 → 1097 lines (+48 lines)
- Section 7 (Python): 141 → 189 lines (+48 lines)
- Python implementation: 92 → 141 lines (+49 lines)

## Navigation Updates

**Main Table**:
- Section 7: 275-416 → 275-464 (141 → 189 lines)
- Section 8-10: 417-508 → 465-556
- Section 11-13: 509-633 → 557-681
- Section 14-15: 634-760 → 682-808
- Section 16: 761-1048 → 809-1096

**Section 7 Subsections**:
- Python: 306-398 → 306-446 (92 → 141 lines)
  * Now includes: overview (8) + pyproject.toml structure (97) + 3 scenarios (36)

**Phase-Specific**:
- Setup & pyproject.toml: 164 → 211 lines
- Validation: 509-633 → 557-681

**Token Savings**:
- Full file: ~3600 → ~3800 tokens
- Python + pyproject.toml: 91% → 87% savings

## Cause

Previous commit added comprehensive pyproject.toml guidance including:
- CLI commands recording
- Slash commands structure
- sd_type calculation rules
- 3 example scenarios (MCP, Spec-Kit, Mixed)

Navigation guide line numbers became outdated.

Author: NeilJo-GY

src/metaspec/templates/meta/sdd/commands/implement.md.j2

@@ -28,43 +28,43 @@ You **MUST** consider the user input before proceeding (if not empty).
 |------|-------|------|----------|-----------------|
 | 1-5. Prerequisites & Setup | 86-232 | 146 lines | 🔴 MUST READ | `read_file(target_file, offset=86, limit=146)` |
 | 6. Execute Implementation | 233-274 | 41 lines | 🔴 MUST READ | `read_file(target_file, offset=233, limit=41)` |
-| **7. Task Execution Details** ⭐ | 275-416 | 141 lines | 🔴 **KEY** | See subsections below ⬇️ |
-| 8-10. Checkpoints & Reporting | 417-508 | 91 lines | 🟡 Important | `read_file(target_file, offset=417, limit=91)` |
-| 11-13. Validation & Saves | 509-633 | 124 lines | 🟡 Important | `read_file(target_file, offset=509, limit=124)` |
-| 14-15. Propagation & Validation | 634-760 | 126 lines | 🟡 Important | `read_file(target_file, offset=634, limit=126)` |
-| 16. Final Report | 761-1048 | 287 lines | 🟢 Reference | `read_file(target_file, offset=761, limit=287)` |
+| **7. Task Execution Details** ⭐ | 275-464 | 189 lines | 🔴 **KEY** | See subsections below ⬇️ |
+| 8-10. Checkpoints & Reporting | 465-556 | 91 lines | 🟡 Important | `read_file(target_file, offset=465, limit=91)` |
+| 11-13. Validation & Saves | 557-681 | 124 lines | 🟡 Important | `read_file(target_file, offset=557, limit=124)` |
+| 14-15. Propagation & Validation | 682-808 | 126 lines | 🟡 Important | `read_file(target_file, offset=682, limit=126)` |
+| 16. Final Report | 809-1096 | 287 lines | 🟢 Reference | `read_file(target_file, offset=809, limit=287)` |
 
-**📋 Section 7: Task Execution Details by Language** (141 lines):
+**📋 Section 7: Task Execution Details by Language** (189 lines):
 
 | Component | Lines | Size | Usage |
 |-----------|-------|------|-------|
-| **Python Implementation** ⭐ | 306-398 | 92 lines | `read_file(target_file, offset=306, limit=92)` |
+| **Python Implementation** ⭐ | 306-446 | 141 lines | `read_file(target_file, offset=306, limit=141)` |
 | **TypeScript Implementation** | 315-323 | 8 lines | `read_file(target_file, offset=315, limit=8)` |
 | **Go Implementation** | 324-332 | 8 lines | `read_file(target_file, offset=324, limit=8)` |
 | **Rust Implementation** | 333-341 | 8 lines | `read_file(target_file, offset=333, limit=8)` |
 
-**Note**: Python section (92 lines) includes overview + detailed `pyproject.toml` structure with `[tool.metaspec]` metadata and sd_type calculation rules (48 lines).
+**Note**: Python section (141 lines) includes overview (8 lines) + detailed `pyproject.toml` structure (97 lines) with `[tool.metaspec]` metadata, CLI commands, slash commands, sd_type calculation, and 3 example scenarios.
 
 **🎯 Phase-Specific Reading** (By component type):
 
 | Phase | Lines | Size | Usage |
 |-------|-------|------|-------|
-| Setup & pyproject.toml | 136-207, 306-398 | 164 lines | `read_file(target_file, offset=136, limit=71)` + `offset=306, limit=92` |
+| Setup & pyproject.toml | 136-207, 306-446 | 211 lines | `read_file(target_file, offset=136, limit=71)` + `offset=306, limit=141` |
 | Language-Specific Impl | 306-341 | 35 lines | `read_file(target_file, offset=306, limit=35)` |
-| Checkpoints & Validation | 417-508 | 91 lines | `read_file(target_file, offset=417, limit=91)` |
-| Progress & Error Handling | 441-508 | 67 lines | `read_file(target_file, offset=441, limit=67)` |
-| Completion & Reporting | 509-633 | 124 lines | `read_file(target_file, offset=509, limit=124)` |
+| Checkpoints & Validation | 465-556 | 91 lines | `read_file(target_file, offset=465, limit=91)` |
+| Progress & Error Handling | 489-556 | 67 lines | `read_file(target_file, offset=489, limit=67)` |
+| Completion & Reporting | 557-681 | 124 lines | `read_file(target_file, offset=557, limit=124)` |
 
 **💡 Typical Usage Patterns**:
 ```python
 # Quick start: Read Prerequisites only (146 lines)
 read_file(target_file, offset=86, limit=146)
 
-# Python implementation: Read Python guidance + pyproject.toml update (92 lines)
-read_file(target_file, offset=306, limit=92)
+# Python implementation: Read Python guidance + pyproject.toml update (141 lines)
+read_file(target_file, offset=306, limit=141)
 
 # Validation phase: Read validation guidance (124 lines)
-read_file(target_file, offset=509, limit=124)
+read_file(target_file, offset=557, limit=124)
 
 # Specific language: Jump to language section
 read_file(target_file, offset=315, limit=8)   # TypeScript
@@ -73,11 +73,11 @@ read_file(target_file, offset=333, limit=8)   # Rust
 ```
 
 **Token Savings**: 
-- Full file: 1049 lines (~3600 tokens)
-- Prerequisites only: 146 lines (~500 tokens) → **86% savings**
+- Full file: 1097 lines (~3800 tokens)
+- Prerequisites only: 146 lines (~500 tokens) → **87% savings**
 - Language-specific: 8 lines (~30 tokens) → **99% savings** 🏆
-- Python + pyproject.toml: 92 lines (~320 tokens) → **91% savings**
-- Phase-specific: 67-164 lines (~230-560 tokens) → **84-94% savings**
+- Python + pyproject.toml: 141 lines (~490 tokens) → **87% savings**
+- Phase-specific: 67-211 lines (~230-730 tokens) → **81-94% savings**
 
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