Tighten TOC link suppressions and fix two retargetable entries

- Retarget Troubleshooting and Terraform Commands Reference to the real
  sections; only the five entries needing cross-doc decisions (#95) stay.
- Switch the README disable block to per-line disables so a TOC entry
  added later still gets dead-anchor checking.
- Reword the TODO: #95 tracks the broken links themselves, not a
  restructure.
- Indent the suppression comments under the preceding list item so the
  TOC and checklists render as single lists (an unindented HTML comment
  between bullets splits the list).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: sir-sigurd

OPERATIONS.md

@@ -20,16 +20,16 @@ This document provides comprehensive operational procedures for cloud teams mana
 
 - [ ] Backup verification (10 min) - [Instructions](#backup-verification-10-minutes)
 - [ ] Security updates (15 min) - [Instructions](#security-updates-15-minutes)
-<!-- TODO: no "Capacity review" section exists yet; see https://github.com/quiltdata/iac/issues/95 -->
-<!-- markdownlint-disable-next-line link-fragments -->
+  <!-- TODO: no "Capacity review" section exists yet; see https://github.com/quiltdata/iac/issues/95 -->
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [ ] Capacity review (10 min) - [Instructions](#capacity-monitoring)
 
 ### Monthly Checklist
 
 - [ ] Capacity planning (20 min) - [Instructions](#capacity-planning-20-minutes)
 - [ ] Cost review (15 min) - [Instructions](#cost-optimization-recommendations)
-<!-- TODO: no "Security audit" section exists yet; see https://github.com/quiltdata/iac/issues/95 -->
-<!-- markdownlint-disable-next-line link-fragments -->
+  <!-- TODO: no "Security audit" section exists yet; see https://github.com/quiltdata/iac/issues/95 -->
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [ ] Security audit (30 min) - [Instructions](#security-audit)
 
 ## Installation Procedures

README.md

@@ -10,17 +10,20 @@ Deploy and maintain Quilt stacks with Terraform using this comprehensive Infrast
 - [Prerequisites](#prerequisites)
 - [Quick Start](#quick-start)
 - [Rightsize Your Search Domain](#rightsize-your-search-domain)
-<!-- TODO(#95): the entries below point to README sections that don't exist yet;
-     the table-of-contents restructure is tracked separately. -->
-<!-- markdownlint-disable link-fragments -->
+  <!-- TODO: the five entries below link to README sections that don't exist
+       yet; see https://github.com/quiltdata/iac/issues/95 -->
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [Database Configuration](#database-configuration)
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [Network Configuration](#network-configuration)
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [CloudFormation Parameters](#cloudformation-parameters)
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [Complete Variable Reference](#complete-variable-reference)
+  <!-- markdownlint-disable-next-line link-fragments -->
 - [Deployment Examples](#deployment-examples)
-- [Troubleshooting](#troubleshooting)
-- [Terraform Commands Reference](#terraform-commands-reference)
-<!-- markdownlint-enable link-fragments -->
+- [Troubleshooting](#troubleshooting-common-issues)
+- [Terraform Commands Reference](#terraform-cheat-sheet)
 
 ## Cloud Team Operations Guide