chore: add PROJECT_STATE.md to all active projects and clients

Establishes inter-session coordination for 29 projects/clients:
- Full lock/component format for active projects (dataforth-dos,
  radio-show, cascades-tucson, valleywide, instrumental-music-center,
  lens-auto-brokerage, msp-audit-scripts)
- Light format for complete/stalled/planning (msp-pricing, pavon,
  wrightstown-*, gururmm-agent, community-forum, glaztech, etc.)
- Onboarding stubs for recently added clients

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

clients/instrumental-music-center/PROJECT_STATE.md

@@ -0,0 +1,73 @@
+# Instrumental Music Center (IMC) — Project State
+
+> READ THIS before starting work on this client.
+> UPDATE THIS when you begin work (claim a lock) and when you finish (release lock + log changes).
+> Last updated: 2026-04-20
+
+---
+
+## Active Session Locks
+
+| Session | Working On | Status | Started |
+|---------|-----------|--------|---------|
+| _(none active)_ | | | |
+
+**How to claim a lock:** Add a row before starting work. Remove it when done. Locks older than 2 hours with no update are considered stale.
+
+---
+
+## Current State
+
+**Status:** ACTIVE
+**Last Activity:** 2026-04-13
+
+Music retail + repair shop running AIMsi POS on-prem. Primary server IMC1 (Dell R720, Windows Server 2016, DC for IMC.local). SQL Server 2019 Express (`IMC1\AIMSQL`). AIMsi DBs moved to dedicated SSD (`S:\SQL\Data\`). Local SQL backups running nightly; Cloudberry off-site backups configured. Known issue: component store corruption (0x80073701) blocking RDS role removal — Server 2019 migration decision pending.
+
+---
+
+## Infrastructure / Access
+
+| Resource | Address | Notes |
+|----------|---------|-------|
+| IMC1 (primary server) | 192.168.0.2 | Windows Server 2016, DC (IMC.local), Dell R720 |
+| SQL instance | IMC1\AIMSQL | MSSQL 2019 Express. DBs on S:\SQL\Data\ |
+
+**SSH:** `ssh IMC\guru@192.168.0.2` (ed25519 key, PowerShell default shell)
+**VPN:** OpenVPN (.ovpn profile) — disconnect Tailscale first (192.168.0.0/24 conflict)
+**Domain admin:** `IMC\guru` — also SQL sysadmin (added via single-user recovery 2026-04-12)
+**Credentials:** Vault entry needed (`clients/imc/` — not yet created as of 2026-04-13)
+
+**Disks:** C: (OS, 77% full), E: (SQL backups + installers), F: (Windows Image Backups), S: (SSD — AIMsi DBs)
+**Backup:** Nightly SQL at 22:00 to `E:\SQL\...\Backup\`; retention script `C:\Scripts\Clean-AimsiBackups.ps1` (14 dailies + 1st-of-month); Cloudberry at `C:\ProgramData\Online Backup\`
+
+**Known issues:**
+- Component store corrupted (0x80073701) — blocks RDS role removal; ETW manifest error on reboot
+- C: drive at ~77% full — monitor
+- SMB1 still enabled — disable when time permits
+- `TestConv61223` DB (leftover from 2023 migration test) safe to drop — verify first
+
+---
+
+## Pending / Next Up
+
+- [ ] Decide Server 2019 migration path (in-place upgrade vs. clean build + migrate)
+- [ ] Verify Cloudberry backup continuity
+- [ ] Drop `TestConv61223` DB after confirming nothing references it
+- [ ] Disable SMB1 on IMC1
+- [ ] Add IMC vault entry for SSH/SQL/domain credentials
+- [ ] Follow up on disk management items from 2026-04-13 session
+
+---
+
+## Recent Changes
+
+| Date | By | Change | Status |
+|------|-----|--------|--------|
+| 2026-04-12 | Mike | IMC1 cleanup and SQL move: AIMsi DBs moved to S: SSD, backup script + retention task deployed, sysadmin access restored | DEPLOYED |
+
+---
+
+## How to Update
+
+**When starting:** Add your session to Active Session Locks.
+**When finishing:** Remove your lock row, add entries to Recent Changes, update Current State if needed.