refactor: reorganize skill numbering, remove obsolete skills, rename shared libs

- Rename: 00→80 claude-settings-optimizer, 88→79 dintel-skill-update,
  92→81 mac-optimizer, 93→82 tui-design-template
- Rename: dintel-shared → _dintel-shared (consistent with _ourdigital-shared)
- Remove: 61-gtm-manager, 62-gtm-guardian (obsolete), 99_archive
- Update all dintel-* skill refs (114 occurrences across 31 files)
- Sync README.md, CLAUDE.md, AGENTS.md with new structure

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

custom-skills/71-dintel-brand-editor/README.md

@@ -1,6 +1,6 @@
 # 71 — D.intelligence Brand Editor & Copywriter
 
-**Agent #71** in the [D.intelligence Agent Corps](../../dintel-shared/README.md).
+**Agent #71** in the [D.intelligence Agent Corps](../../_dintel-shared/README.md).
 Brand-compliant content generation and evaluation for [D.intelligence](https://dintelligence.co.kr).
 
 ## What It Does
@@ -15,9 +15,9 @@ Brand-compliant content generation and evaluation for [D.intelligence](https://d
 | Agent # | 71 |
 | Skill Name | `dintel-brand-editor` |
 | Version | 1.1.0 |
-| Collaborates With | **#70 Brand Guardian** (compliance review), **dintel-shared** (shared constants) |
+| Collaborates With | **#70 Brand Guardian** (compliance review), **_dintel-shared** (shared constants) |
 
-This agent uses shared brand constants from `dintel-shared/src/dintel/brand.py` for colors, terminology, and style rules.
+This agent uses shared brand constants from `_dintel-shared/src/dintel/brand.py` for colors, terminology, and style rules.
 
 ## Triggers
 

custom-skills/71-dintel-brand-editor/code/CLAUDE.md

@@ -8,7 +8,7 @@ Generate brand-compliant content and evaluate existing content against the D.int
 
 - **Agent #71** — Brand Editor & Copywriter
 - **Collaborates with**: Agent #70 (Brand Guardian) for compliance review
-- **Shared constants**: `dintel-shared/src/dintel/brand.py` (colors, terminology, style tokens)
+- **Shared constants**: `_dintel-shared/src/dintel/brand.py` (colors, terminology, style tokens)
 
 ## Universal Guardrails
 
@@ -24,8 +24,8 @@ Generate brand-compliant content and evaluate existing content against the D.int
 - **Website**: dintelligence.co.kr
 - **Slogan**: Think Forward
 - **Concept**: SMART Marketing Clinic
-- **Brand Guide**: `../../dintel-shared/references/dintelligence_brand_guide.md`
-- **Shared Constants**: `../../dintel-shared/src/dintel/brand.py`
+- **Brand Guide**: `../../_dintel-shared/references/dintelligence_brand_guide.md`
+- **Shared Constants**: `../../_dintel-shared/src/dintel/brand.py`
 
 ## Source Files — Company Credential
 

custom-skills/71-dintel-brand-editor/code/scripts/generate_credential.py

@@ -5,7 +5,7 @@ Brand-compliant DOCX following the D.intelligence Korean Writing Style Guide.
 Tone: ~합니다 존칭 서술체 (service/company intro style)
 
 Agent #71 (dintel-brand-editor) v1.1.0 — D.intelligence Agent Corps
-Shared brand constants: dintel-shared/src/dintel/brand.py
+Shared brand constants: _dintel-shared/src/dintel/brand.py
 """
 
 from docx import Document
@@ -16,7 +16,7 @@ from docx.oxml.ns import qn
 import os
 
 # ── Brand Colors ──────────────────────────────────────
-# See also: dintel-shared/src/dintel/brand.py for canonical values
+# See also: _dintel-shared/src/dintel/brand.py for canonical values
 BRAND_DARK = RGBColor(0x1A, 0x1A, 0x2E)    # Dark navy
 BRAND_PRIMARY = RGBColor(0x2D, 0x2D, 0x44)  # Primary text
 BRAND_ACCENT = RGBColor(0xC8, 0xD6, 0x2C)   # Lime/yellow accent

custom-skills/71-dintel-brand-editor/desktop/SKILL.md

@@ -20,7 +20,7 @@ Generate brand-compliant content and evaluate existing content against the D.int
 
 - **Agent #71** — Brand Editor & Copywriter
 - **Collaborates with**: Agent #70 (Brand Guardian) for compliance review
-- **Shared constants**: `dintel-shared/src/dintel/brand.py` (colors, terminology, style tokens)
+- **Shared constants**: `_dintel-shared/src/dintel/brand.py` (colors, terminology, style tokens)
 
 ## Universal Guardrails
 
@@ -143,4 +143,4 @@ To evaluate existing content against the D.intelligence brand guide:
 
 ### Reference Files
 - **`references/dintelligence_brand_guide.md`** — Complete D.intelligence Korean writing style guide with all 12 sections: tone & voice, sentence structure, vocabulary, punctuation, content patterns, web copywriting set, and compliance checklist. Load when generating or evaluating content.
-- **`dintel-shared/src/dintel/brand.py`** — Shared brand constants (colors, terminology, style tokens) used across the Agent Corps.
+- **`_dintel-shared/src/dintel/brand.py`** — Shared brand constants (colors, terminology, style tokens) used across the Agent Corps.