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/81-mac-optimizer/commands/mac-cleanup.md

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+---
+allowed-tools: Bash(bash *audit_cleanup.sh*), Bash(bash *cleanup_execute.sh*), Bash(du *), Bash(brew *), Bash(npm *), Bash(pip *), Bash(docker *), Bash(rm *)
+description: Scan and clean caches, logs, and clutter — shows sizes first, cleans only with consent
+---
+
+## Your task
+
+Scan for reclaimable disk space and offer cleanup.
+
+### Step 1 — Run the audit
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_cleanup.sh
+```
+
+### Step 2 — Report
+
+Parse JSON output and present as a table sorted by size (largest first):
+
+| Category | Size | Risk | Target |
+|---|---|---|---|
+
+Show the total reclaimable space.
+
+### Step 3 — Ask for consent
+
+Ask which categories to clean. Group by risk level (Safe / Moderate / Risky).
+
+### Step 4 — Dry run first
+
+For approved targets, always run dry-run first:
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/cleanup_execute.sh --dry-run <targets>
+```
+
+Show the output and ask for final confirmation.
+
+### Step 5 — Execute
+
+Only after explicit confirmation:
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/cleanup_execute.sh --execute <targets>
+```
+
+### Safety rules
+
+- Never execute cleanup without explicit user approval
+- Always show sizes before deleting anything
+- Always run --dry-run before --execute
+- Docker cleanup uses `docker system prune`, never direct file deletion
+- No sudo by default — if an action needs sudo, state why and ask first

custom-skills/81-mac-optimizer/commands/mac-doctor.md

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+---
+allowed-tools: Bash(bash *audit_*.sh*), Bash(bash *cleanup_execute.sh*), Bash(du *), Bash(df *), Bash(brew *), Bash(npm *), Bash(pip *), Bash(docker *), Bash(cp *)
+description: Full macOS system health check — runs all 5 audit modules and presents unified findings
+---
+
+## Your task
+
+Run a full macOS system health check using all 5 audit modules. Follow this workflow exactly:
+
+### Step 1 — Run all audits
+
+Run these scripts sequentially, collecting all JSON output:
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_packages.sh
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_environment.sh
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_security.sh
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_cleanup.sh
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_resources.sh
+```
+
+If a script exits non-zero, report the error and continue with other modules.
+
+### Step 2 — Parse and report
+
+Parse all JSON lines. Each has: `{"module":"...","severity":"...","finding":"...","action":"...","details":"..."}`
+
+Present findings grouped by severity (critical first, then warning, then info) as markdown tables:
+
+```
+### Critical
+| Module | Finding | Recommended Action |
+|---|---|---|
+
+### Warning
+| Module | Finding | Recommended Action |
+|---|---|---|
+
+### Info
+| Module | Finding | Recommended Action |
+|---|---|---|
+```
+
+### Step 3 — Ask for consent
+
+STOP and ask: "Which actions would you like me to perform? You can approve by category (e.g., 'update packages and clean caches') or review each item."
+
+### Step 4 — Execute approved actions only
+
+For cleanup actions, always run `--dry-run` first and show what will happen before running `--execute`.
+
+### Safety rules
+
+- Never execute cleanup without explicit user approval
+- Always show sizes before deleting anything
+- Security module is read-only — present findings and remediation guidance only
+- Back up shell configs before modifying: `cp ~/.zshrc ~/.config/mac-optimizer-backups/.zshrc.$(date +%s)`
+- Process deny-list: never suggest killing kernel_task, launchd, WindowServer, loginwindow, mds, mds_stores, opendirectoryd, coreaudiod, SystemUIServer, Finder, Dock
+- No sudo by default — if an action needs sudo, state why and ask first
+- Docker cleanup uses `docker system prune`, never direct file deletion

custom-skills/81-mac-optimizer/commands/mac-environment.md

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+---
+allowed-tools: Bash(bash *audit_environment.sh*), Bash(echo *), Bash(cp *)
+description: Audit shell environment — PATH, symlinks, shell configs, and startup time
+---
+
+## Your task
+
+Audit the shell environment on this Mac.
+
+### Step 1 — Run the audit
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_environment.sh
+```
+
+### Step 2 — Report
+
+Parse JSON output and present as a severity-ranked markdown table:
+
+| Severity | Finding | Recommended Action | Details |
+|---|---|---|---|
+
+### Step 3 — Ask for consent
+
+If there are fixable issues (duplicate PATH entries, broken symlinks, non-existent directories), list them and ask which to fix.
+
+### Safety rules
+
+- Back up shell configs before modifying: `cp ~/.zshrc ~/.config/mac-optimizer-backups/.zshrc.$(date +%s)`
+- Present PATH consolidation suggestions but don't auto-modify

custom-skills/81-mac-optimizer/commands/mac-packages.md

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+---
+allowed-tools: Bash(bash *audit_packages.sh*), Bash(brew *), Bash(npm *), Bash(pip *), Bash(nvm *), Bash(pyenv *)
+description: Audit package managers (Homebrew, npm, pip, pyenv) for outdated packages and issues
+---
+
+## Your task
+
+Audit all package managers on this Mac.
+
+### Step 1 — Run the audit
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_packages.sh
+```
+
+### Step 2 — Report
+
+Parse JSON output and present as a severity-ranked markdown table:
+
+| Severity | Finding | Recommended Action | Details |
+|---|---|---|---|
+
+### Step 3 — Ask for consent
+
+List available update actions grouped by risk. Ask which actions to perform.
+
+### Safety notes
+
+- `brew upgrade` is generally safe but can break projects pinned to specific versions
+- Global npm packages are version-independent from project dependencies
+- pip upgrades can break dependency chains — suggest `--dry-run` first
+- Only audit pyenv-managed environments (not system Python)

custom-skills/81-mac-optimizer/commands/mac-resources.md

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+---
+allowed-tools: Bash(bash *audit_resources.sh*), Bash(ps *), Bash(kill *), Bash(df *)
+description: Monitor CPU, memory, disk, battery, and identify resource-hungry processes
+---
+
+## Your task
+
+Check system resource usage on this Mac.
+
+### Step 1 — Run the audit
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_resources.sh
+```
+
+### Step 2 — Report
+
+Parse JSON output and present as a severity-ranked markdown table:
+
+| Severity | Finding | Recommended Action | Details |
+|---|---|---|---|
+
+### Step 3 — Offer actions
+
+If high-resource processes are found, offer to help. But respect the deny-list:
+
+**Never suggest killing**: kernel_task, launchd, WindowServer, loginwindow, mds, mds_stores, opendirectoryd, coreaudiod, SystemUIServer, Finder, Dock
+
+For user processes consuming excessive resources, ask before terminating.

custom-skills/81-mac-optimizer/commands/mac-security.md

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+---
+allowed-tools: Bash(bash *audit_security.sh*)
+description: Security posture assessment — SIP, Gatekeeper, Firewall, FileVault, SSH, ports
+---
+
+## Your task
+
+Run a read-only security posture assessment.
+
+### Step 1 — Run the audit
+
+```bash
+bash $CLAUDE_PLUGIN_ROOT/skills/mac-optimizer/scripts/audit_security.sh
+```
+
+### Step 2 — Report
+
+Parse JSON output and present as a severity-ranked markdown table:
+
+| Severity | Finding | Recommended Action | Details |
+|---|---|---|---|
+
+### Step 3 — Guidance only
+
+The security module is **read-only**. Present findings and remediation guidance. Do NOT attempt to change security settings. Explain how the user can fix issues themselves via System Settings or Terminal commands.