claudetools/session-logs/2026-05-15-session.md

# Session Log — 2026-05-15

---

## Update: 06:21 UTC — Session log housekeeping, submodule sync fix

### Session Summary

After completing the main RMM work (fleet update, dead write-half fix), the session turned to housekeeping: establishing correct session log placement for GuruRMM work and fixing the submodule to stay current on sync.

Session log placement was corrected end-to-end. The convention had been ambiguous — session logs were being committed to the gururmm submodule repo, then the claudetools parent repo updated the submodule pointer, creating unnecessary double commits and coupling session notes to a code repo. The rule was established: GuruRMM session logs belong in claudetools `session-logs/` root, not in the gururmm repo. CLAUDE.md and FILE_PLACEMENT_GUIDE.md were updated with explicit rules. Today's session log (written earlier in the session) was moved from the gururmm repo to the correct location in claudetools.

All historical session logs in the gururmm repo were then audited and migrated. Nine files were found: four were unique to gururmm and copied to claudetools, four had duplicates in claudetools where the gururmm version was more complete (replaced), and one where the claudetools version was longer (kept). All nine were then deleted from gururmm (commit `02d10b7` on gururmm, `3042975` → `02d10b7` on server). The gururmm repo is now session-log-free.

The sync.sh script was updated in two passes to properly maintain the submodule. First pass added a Phase 1a that ran `git submodule update --remote` — this fetched the latest gururmm commits but left the submodule in detached HEAD state. Second pass replaced this with a `set +e`-guarded block that runs `git fetch origin`, `git checkout main`, and `git merge --ff-only origin/main` inside each submodule, ensuring the working tree is on the `main` branch and fast-forwarded. `.gitmodules` was also updated to declare `branch = main` so git knows which remote branch to track with `--remote`.

### Key Decisions

- **Session logs in claudetools, not gururmm**: gururmm is a code repo; mixing session notes into it creates noise in git history and couples operational logs to a repo that developers and tools may clone independently.
- **Replace claudetools with longer gururmm version**: where the same date existed in both repos, line count was used as a proxy for completeness (more lines = session was appended to over time). The one case where claudetools was longer (04-20), claudetools was kept.
- **`set +e` / `set -e` wrapper for submodule ops**: git emits non-fatal status messages ("Your branch is behind") that, under `set -e`, were triggering exit code 128 and killing the script. Temporarily disabling errexit for the submodule section is the standard solution.
- **`git merge --ff-only` rather than `git pull --rebase`**: submodule should never have local commits that need rebasing; if it does, fast-forward failing is the right signal to investigate rather than silently rebase.

### Problems Encountered

- **`set -e` + `git checkout main` = exit 128**: "Your branch is behind 'origin/main'" is stdout output from a successful checkout, but something in the submodule context caused exit code 128. Resolution: wrap the entire submodule block in `set +e` / `set -e`.
- **`git submodule update --remote` leaves detached HEAD**: `--remote` checks out the target commit directly rather than staying on a branch. Resolution: follow with explicit `git checkout main` and `git merge --ff-only` inside the submodule.
- **Binary deployed to wrong path on first try**: copied new server binary to `/usr/local/bin/` but systemd unit points to `/opt/gururmm/`. Resolution: stop service, copy to correct path, start.
- **`cp: Text file busy`**: attempted to copy new binary while service was running. Resolution: stop first, then copy.

### Configuration Changes

| File | Change |
|------|--------|
| `.claude/CLAUDE.md` | Added explicit GuruRMM session log placement rule (root session-logs/, not submodule) |
| `.claude/FILE_PLACEMENT_GUIDE.md` | Added GuruRMM row to quick reference table |
| `.claude/scripts/sync.sh` | Added Phase 1a: submodule fetch + checkout main + ff-merge |
| `.gitmodules` | Added `branch = main` to gururmm submodule entry |
| `session-logs/2025-12-15-session.md` | Migrated from gururmm (created) |
| `session-logs/2025-12-20-session.md` | Migrated from gururmm (created) |
| `session-logs/2026-04-19-session.md` | Replaced with longer gururmm version |
| `session-logs/2026-04-21-session.md` | Replaced with longer gururmm version |
| `session-logs/2026-05-12-session.md` | Replaced with longer gururmm version |
| `session-logs/2026-05-12-guru-rmm-macos-agent-phase1.md` | Migrated from gururmm (created) |
| `session-logs/2026-05-13-session.md` | Replaced with longer gururmm version |
| `session-logs/2026-05-14-session.md` | Migrated from gururmm (created) |

### Reference Information

- gururmm session log removal commit: `3042975` (server local), pushed as `02d10b7` (Gitea)
- sync.sh submodule fix commits: `415476e` (first pass, --remote), `b6c981d` (second pass, branch-aware)
- claudetools migration commit: `39bc5f1` (session log migration)

## User
- **User:** Mike Swanson (mike)
- **Machine:** DESKTOP-0O8A1RL
- **Role:** admin
- **Session Span:** ~03:30 UTC – 06:03 UTC (continued from prior context window)

---

## Session Summary

This session was a continuation of a prior context window that had implemented 0.6.19 agent features (extended temperature sensors, wts.rs Windows fixes, watchdog always-on policy changes). The immediate work on entry was completing the 0.6.19 fleet rollout: three agents — IMC1 (fa99e913), GND-SERVER (cd086074), and CS-SERVER (6766e973) — were stuck on 0.6.18 with dead WebSocket write halves. The server's ConnectedAgents in-memory map held stale entries: read side (heartbeats) still worked, but write side (commands) was dead, so update dispatch failed with "Agent is offline" even though DB showed them online.

The first approach was setting those agents offline in the DB to force a reconnect. This failed because the agents were still heartbeating (the server's in-memory read task was alive), so the DB immediately got updated back to online on the next heartbeat. A server restart was needed to clear the in-memory map. After restart, all three agents reconnected with fresh connections within seconds and immediately accepted the 0.6.19 update. All completed successfully within 3 seconds of reconnection.

During log inspection, two server bugs were identified and fixed. First: `TemperatureSensor` struct in `server/src/ws/mod.rs` used field names `temp_celsius` and `critical_celsius`, but the agent's `SensorReading` struct serializes to `value`, `sensor_type`, `unit`, and `critical_value`. Every metrics message from any agent that included temperature readings caused a deserialization error (`missing field 'temp_celsius'`) that was logged but silently dropped the data. Second: the WebSocket receive loop did not monitor the send task. When a WebSocket write failed (killing the send task), the receive loop continued running indefinitely, keeping the agent in ConnectedAgents with a dead write half. Every subsequent command dispatch attempt failed silently. The fix uses `tokio::select!` to watch both incoming messages and the send task — when the send task exits, the receive loop breaks, cleanup removes the agent from ConnectedAgents, and the agent reconnects fresh.

Both fixes were implemented via Python patch script on the server source, compiled with cargo (4m 6s build), and deployed by stopping the service, replacing `/opt/gururmm/gururmm-server`, and restarting. The fixes were committed and pushed to Gitea as commit 56283dd. The patched server ran cleanly with no `temp_celsius` errors and no failed command dispatches in the new process's logs.

At session end: 15 online agents on 0.6.19, AD2 on 0.6.1 (offline since April 20, requires physical/VPN access), and ~30 offline agents on older versions that will auto-update on next reconnect.

---

## Key Decisions

- **Server restart over DB-offline trick**: Setting agents offline in the DB does not disconnect them because the server's in-memory receive loop is still running and updates `last_seen` on every heartbeat, racing with any DB status change. Only a server restart clears the in-memory ConnectedAgents map. Accepted the brief (~10s) outage of all agents.

- **`biased` ordering in select! (send_task first)**: Could have put incoming messages first, but polling send_task first ensures dead write halves are detected on the very next loop iteration rather than waiting for the next incoming message. Incoming messages still get processed every iteration as long as the send task is alive.

- **TemperatureSensor renamed to match agent**: Rather than aliasing with `#[serde(rename)]`, fully renamed the struct fields to match the agent's canonical names (`value`, `sensor_type`, `unit`, `critical_value`). Any previously stored JSON in the `temperatures` column used wrong field names and was silently unreadable, so there's no backward-compat cost to renaming.

- **Edit directly on server vs. local + push**: Local repo is a stale copy of gururmm. Edited the live source on `/home/guru/gururmm/`, built there, deployed, then committed and pushed. Faster than any local→Gitea→pull flow, and the single file edit was low-risk.

- **Deployed first, then pushed to Gitea**: Committed after confirming the fix worked in production. Appropriate for a targeted bugfix with no DB migrations.

---

## Problems Encountered

- **`cp: cannot create regular file '/opt/gururmm/gururmm-server': Text file busy`**: Tried to copy the new binary while the service was running. Resolution: stop service first (`systemctl stop`), then copy, then start. Standard Linux "can't replace a running executable" behavior.

- **Binary deployed to wrong path first**: Copied to `/usr/local/bin/gururmm-server` but systemd unit's `ExecStart` points to `/opt/gururmm/gururmm-server`. The service restarted but ran the old binary. Identified by checking `systemctl show gururmm-server --property=ExecStart`. Resolution: stop/copy to correct path/start.

- **git push rejected (non-fast-forward)**: Remote had commits not in local. Resolution: `git pull --rebase` then `git push`.

- **psql peer auth failed**: `psql -U gururmm gururmm` uses peer auth (Unix socket), requires matching OS user. Used `sudo -u postgres psql -d gururmm` to execute queries as postgres superuser.

- **`temp_celsius` errors in patched server logs**: After deploying the patch (PID 946066), still saw `temp_celsius` errors in `journalctl`. Turned out those error lines had PID 943615 or 945573 (old server instances) — the patched server produced none. Confirmed by filtering with `_PID=946066`.

---

## Configuration Changes

### Server Source (on `/home/guru/gururmm/`)

**`server/src/ws/mod.rs`** — Two changes:
1. `TemperatureSensor` struct renamed to match agent:
   - `temp_celsius: f32` → `value: f32`
   - `critical_celsius: Option<f32>` → `critical_value: Option<f32>`
   - Added: `sensor_type: String`, `unit: String`
2. `let send_task` → `let mut send_task`
3. Receive loop changed from `while let Some(msg_result) = receiver.next().await` to `loop { tokio::select! { biased; _ = &mut send_task => { warn!(...); break; } msg_result = receiver.next() => { ... } } }`

### Binary Deployed
- `/opt/gururmm/gururmm-server` — replaced with build from 2026-05-15 03:47 UTC

### Commits
- Gururmm repo: `56283dd` — "fix: TemperatureSensor schema mismatch and dead write-half detection"

---

## Credentials & Secrets

None new. API credentials used:
- GuruRMM API login: `claude-api@azcomputerguru.com` / `ClaudeAPI2026!@#` (from vault, used to get JWT for manual update trigger attempts)

---

## Infrastructure & Servers

- **GuruRMM Server**: `172.16.3.30:3001` — Rust/Axum, systemd unit `gururmm-server`
- **Binary path**: `/opt/gururmm/gururmm-server`
- **Source path**: `/home/guru/gururmm/` (git repo, remote at `172.16.3.20:azcomputerguru/gururmm.git`)
- **Gitea**: `http://172.16.3.20:3000` (internal, not git.azcomputerguru.com which is behind Cloudflare)
- **DB**: PostgreSQL on `172.16.3.30`, database `gururmm`, accessed via `sudo -u postgres psql -d gururmm`

---

## Commands & Outputs

```bash
# Set agents offline to force reconnect (didn't work alone, needed restart too)
sudo -u postgres psql -d gururmm -c \
  "UPDATE agents SET status='offline' WHERE hostname IN ('IMC1','GND-SERVER','CS-SERVER') RETURNING hostname, status, agent_version;"

# Server restart (clears in-memory ConnectedAgents map)
sudo systemctl restart gururmm-server

# Build patched server (4m 6s)
cd /home/guru/gururmm/server && /home/guru/.cargo/bin/cargo build --release

# Deploy (stop-first pattern to avoid "Text file busy")
sudo systemctl stop gururmm-server
sudo cp /home/guru/gururmm/server/target/release/gururmm-server /opt/gururmm/gururmm-server
sudo systemctl start gururmm-server

# Commit and push fixes
cd /home/guru/gururmm
git add server/src/ws/mod.rs
git commit -m 'fix: TemperatureSensor schema mismatch and dead write-half detection'
git pull --rebase && git push
# Result: 56283dd pushed to 172.16.3.20:azcomputerguru/gururmm.git
```

Key log evidence of dead write half (before fix):
```
INFO  gururmm_server::ws: Dispatching update to connected agent fa99e913... on heartbeat: 0.6.18 -> 0.6.19
ERROR gururmm_server::ws: Failed to send heartbeat update command to agent fa99e913... — rolling back pending record
```

After restart + update:
```
INFO  gururmm_server::ws: Received update result from agent fa99e913...: update_id=..., status=starting
INFO  gururmm_server::ws: Agent fa99e913... reconnected after update: 0.6.18 -> 0.6.19
```

---

## Pending / Incomplete Tasks

- **AD2 (0.6.1, offline since 2026-04-20)**: Requires physical or VPN access. Cannot be updated remotely. Low priority but should be investigated when accessible.

- **BB-SERVER enrollment loop**: Repeatedly hitting `duplicate key value violates unique constraint "idx_agents_site_device"` on every WS connect attempt. Not investigated. The agent is already enrolled (row exists) but its auth flow is re-attempting first-time enrollment. Likely needs a code fix in the site-based auth logic to handle "already enrolled, just reconnecting" more gracefully.

- **Offline agents on older versions** (will auto-update on reconnect):
  - 0.6.18: LAPTOP-8P7HDSEI, MSI, Maras-HP-Laptop
  - 0.6.3: ~14 machines (ACCT2-PC, ANN-PC, ASSISTMAN-PC, etc. — Stamback/Safesite fleet)
  - 0.6.2: NurseAssist, PST-SURFACE, StambackLaptopNew
  - 0.6.1: Mikes-MacBook-Air.local (offline)
  - 0.5.1: SL-SERVER x2 (offline, possibly abandoned)

- **`unsupported Unicode escape sequence` on hardware inventory for IMC1**: Logged at `WARN` level after 0.6.19 update. The agent's hardware inventory JSON contains a Unicode escape sequence that PostgreSQL rejects. Likely a field value (serial number, software name, etc.) with a problematic character. Not investigated.

- **Dead write half root cause not fully diagnosed**: We know the pattern (send_task dies, receive loop keeps running), and the fix prevents it from being persistent. But what originally causes the send_task to die (network issue? buffer full? specific message type?) is not determined. The `select!` fix means it self-heals now (agent reconnects), so this is lower priority.

- **Policy wiring plan** (`ticklish-questing-stallman.md`): Full end-to-end policy propagation still pending. Server sends ConfigUpdate on connect (wired), but agent-side handling is not complete. Deferred.

- **Safesite Glendale MSI machine**: Waiting for user to be away to push DisplayLink driver update.

- **LHM bundling in MSI**: LibreHardwareMonitor files not in build pipeline; self-healing download not implemented.

- **Build lock**: No flock on `build-agents.sh` to prevent concurrent invocations.

---

## Reference Information

- **Gururmm Gitea repo**: `http://172.16.3.20:3000/azcomputerguru/gururmm`
- **Fix commit**: `56283dd` — fix: TemperatureSensor schema mismatch and dead write-half detection
- **Server source**: `/home/guru/gururmm/server/src/ws/mod.rs`
- **Agent metrics struct**: `agent/src/metrics/mod.rs:17` — `SensorReading { label, value, sensor_type, unit, critical_value }`
- **Server TemperatureSensor struct**: `server/src/ws/mod.rs:316` — now matches agent
- **Dead write half fix**: `server/src/ws/mod.rs:679` — `let mut send_task`, receive loop at ~691 uses `tokio::select!`
- **Plan file**: `C:\Users\guru\.claude\plans\ticklish-questing-stallman.md` (policy wiring, deferred)
- **Fleet status as of session end**:
  - Online on 0.6.19: CS-SERVER, DESKTOP-0O8A1RL, DESKTOP-BTR2AM3, DESKTOP-DLTAGOI, DESKTOP-H6QHRR7, DESKTOP-KQSL232, DF-GAGETRAK, GND-SERVER, IMC1, LAPTOP-DRQ5L558, LAPTOP-E0STJJE8, MAINTENANCE-PC, MDIRECTOR-PC, NURSESTATION-PC, gururmm (15 agents)
  - Online on 0.6.1: AD2 (offline since 2026-04-20, unreachable)

---

## Update: 07:50 PT — Network discovery: hostname lookup, subnet auto-detection, fleet update to 0.6.20

## User
- **User:** Mike Swanson (mike)
- **Machine:** DESKTOP-0O8A1RL
- **Role:** admin
- **Session Span:** ~07:00 PT – 07:50 PT (continued from prior context window)

---

## Session Summary

This session picked up from a prior context window that had implemented the network discovery hostname lookup and subnet auto-detection features. All code changes across 8 files had been applied but a compile error was blocking the build: `format!({}/{}, network, prefix)` on line 775 of `agent/src/metrics/mod.rs` was missing quotes around the format string. Fixed with a single `sed` line-number substitution.

Agent and server release builds were launched in parallel. Agent (0.6.19) compiled clean. Server failed with a second missing-quotes error in the new `get_suggested_subnets` handler: `iface.get(ipv4_subnets)` instead of `iface.get("ipv4_subnets")` at line 301 of `server/src/api/discovery.rs`. Fixed and server rebuilt successfully. Dashboard TypeScript build then failed with multiple missing string literals: `.join(, )` instead of `.join(", ")` in two places, bare `manual` instead of `"manual"` in two places (one the earlier Python fix missed), `api.get<string[]>()` with no URL argument, and `setIpRanges()`/`setExclusions()` with no empty-string argument. Each required a targeted fix. The `_getSensorUnit` function in `AgentDetail.tsx` was declared but unused (pre-existing dead code that TS6133 finally flagged); it was deleted.

All three artifacts built clean after the fixes. Server binary was deployed (stop/copy/start pattern), dashboard dist was copied to `/var/www/gururmm/dashboard/`, and all changes were committed to the gururmm repo as `0c60d36`. The `latest` symlink and `gururmm-agent-linux-amd64-latest` were both pointing at 0.6.19, which meant the scanner would not dispatch updates. Version bumped to 0.6.20, rebuilt, and the binary + sha256 placed at `/var/www/gururmm/downloads/gururmm-agent-linux-amd64-0.6.20`. The version bump was committed as `c97b0f3`.

At the 14:47 UTC scan (5-minute interval), the server found 50 binaries (up from 49), immediately identified agents on 0.6.19 as needing an update, dispatched to the first connected agent, and that agent reconnected on 0.6.20 within 11 seconds. Fleet rollout is proceeding automatically on heartbeat.

---

## Key Decisions

- **Single-quoted SSH heredocs do not protect backtick template literals**: Despite using `<< 'ENDSCRIPT'`, bash inside an SSH double-quoted command still executed backtick template literals in the heredoc content as command substitution. Workaround: build the TypeScript template literal string using Python's `chr(96)` to represent the backtick character, passing everything via `python3 -c '...'` with single-quoted outer shell quoting.

- **Version bump to 0.6.20 required to trigger fleet update**: The scanner only dispatches updates when the available version is strictly greater than the agent's reported version. Since the discovery feature changes (PTR lookup, subnet reporting) were built at 0.6.19, a bump to 0.6.20 was needed to push the update to the fleet. Alternative (editing the binary in-place without a version bump) would have left agents unaware of the new capabilities.

- **Correct downloads directory was `/var/www/gururmm/downloads/`, not `/opt/gururmm/updates/`**: The server's `DOWNLOADS_DIR` env var (from `/opt/gururmm/.env`) points to the web-accessible path. The `/opt/gururmm/updates/` directory is not scanned. This was discovered when the scanner continued reporting 49 binaries after placing the file in the wrong location.

- **`latest` symlink updated alongside versioned binary**: The `gururmm-agent-linux-amd64-latest` symlink is used by agent self-updaters that don't know the target version ahead of time. Updated atomically with `ln -sf` to point at 0.6.20.

---

## Problems Encountered

- **`format!({}/{}, network, prefix)` compile error**: Missing double quotes around the format string in the subnet CIDR formatting line. Fixed with `sed -i '775s/...'` line-number substitution.

- **`iface.get(ipv4_subnets)` compile error in server**: Same pattern — missing quotes made Rust look for a variable named `ipv4_subnets`. Fixed with `sed -i` on the specific line.

- **Dashboard TS errors — multiple missing string literals**: Python patch scripts applied earlier in the session used heredocs that silently dropped or corrupted string content (backticks executed as commands, quotes stripped). Result: `.join(, )`, `setIpRanges()`, `setSchedule(manual)`, `api.get<string[]>()` (no URL) in the compiled TypeScript. Fixed with targeted `sed -i` and `python3 -c` with `chr(96)` for backtick characters.

- **`_getSensorUnit` TS6133 error**: Prefixing with `_` does not suppress TS6133 for function declarations (only works for parameters/variables). Resolved by deleting the unused function entirely.

- **Binary placed in wrong updates directory**: Placed initial 0.6.20 binary at `/opt/gururmm/updates/` (wrong) instead of `/var/www/gururmm/downloads/` (correct, from `.env`). Scanner continued to report 49 binaries. Found the correct path by reading `.env` and confirmed by comparing `ls` counts vs the scanner's "49 binaries" log output.

---

## Configuration Changes

### Server Source (`/home/guru/gururmm/`)

| File | Change |
|------|--------|
| `agent/Cargo.toml` | Bumped version 0.6.19 → 0.6.20 |
| `agent/src/metrics/mod.rs` | Fixed `format!({}/{}, ...)` → `format!("{}/{}", ...)` on line 775; added `use if_addrs::IfAddr`, `ipv4_subnets` field, subnet collection block |
| `agent/src/discovery/mod.rs` | Replaced stub `reverse_dns()` with working PTR implementation using `dns_lookup::lookup_addr` in `spawn_blocking` |
| `agent/Cargo.toml` | Added `if-addrs = "0.10"` and `dns-lookup = "2"` |
| `server/src/api/discovery.rs` | Added `get_suggested_subnets` handler; fixed `iface.get("ipv4_subnets")` quote |
| `server/src/api/mod.rs` | Added `.route("/agents/:id/discovery/subnets", get(discovery::get_suggested_subnets))` |
| `server/src/ws/mod.rs` | Added `#[serde(default)] pub ipv4_subnets: Vec<String>` to `NetworkInterface` struct |
| `dashboard/src/api/client.ts` | Added `getSuggestedSubnets` to `discoveryApi`; fixed missing URL in `api.get<string[]>()` |
| `dashboard/src/components/DiscoveryTab.tsx` | Two-effect pattern for subnet auto-population; fixed all missing string literals |
| `dashboard/src/pages/AgentDetail.tsx` | Deleted unused `getSensorUnit` / `_getSensorUnit` function |

### Deployed Artifacts

| Path | Change |
|------|--------|
| `/opt/gururmm/gururmm-server` | Replaced with build from 2026-05-15 14:32 UTC |
| `/var/www/gururmm/dashboard/` | Replaced with dashboard dist from 2026-05-15 14:38 UTC |
| `/var/www/gururmm/downloads/gururmm-agent-linux-amd64-0.6.20` | New — 3.9 MB, sha256 `ed5ce77cd5d9e30ee9f5a73a6904e7f6667041ab9fff798e7d255a905efbf1a2` |
| `/var/www/gururmm/downloads/gururmm-agent-linux-amd64-0.6.20.sha256` | New — companion checksum |
| `/var/www/gururmm/downloads/gururmm-agent-linux-amd64-latest` | Symlink updated: 0.6.19 → 0.6.20 |

---

## Credentials & Secrets

None new.

---

## Infrastructure & Servers

- **GuruRMM Server**: `172.16.3.30:3001` — Rust/Axum, systemd unit `gururmm-server`
- **Downloads dir**: `/var/www/gururmm/downloads/` (configured via `DOWNLOADS_DIR` in `/opt/gururmm/.env`)
- **Dashboard nginx root**: `/var/www/gururmm/dashboard/`
- **Downloads base URL**: `https://rmm-api.azcomputerguru.com/downloads`
- **Scanner interval**: 300s (5 min), configured via `SCAN_INTERVAL_SECS` env var (default 300)

---

## Commands & Outputs

```bash
# Fix format! quote (line 775 of agent/src/metrics/mod.rs)
sed -i '775s/.*/                        let cidr = format!("{}\/{}",  network, prefix);/' \
  /home/guru/gururmm/agent/src/metrics/mod.rs

# Fix server quote (line 301 of server/src/api/discovery.rs)
sed -i '301s/iface.get(ipv4_subnets)/iface.get("ipv4_subnets")/' \
  /home/guru/gururmm/server/src/api/discovery.rs

# Fix client.ts backtick URL using chr(96) trick
python3 -c "
path = '/home/guru/gururmm/dashboard/src/api/client.ts'
bt = chr(96)
new_line = '    api.get<string[]>(' + bt + '/api/agents/\${agentId}/discovery/subnets' + bt + '),\n'
lines = open(path).readlines()
for i, line in enumerate(lines):
    if 'api.get<string[]>()' in line and 'getSuggestedSubnets' not in line:
        lines[i] = new_line
open(path, 'w').writelines(lines)
"

# Deploy server
sudo systemctl stop gururmm-server
sudo cp /home/guru/gururmm/server/target/release/gururmm-server /opt/gururmm/gururmm-server
sudo systemctl start gururmm-server

# Deploy dashboard
sudo cp -r /home/guru/gururmm/dashboard/dist/. /var/www/gururmm/dashboard/

# Place 0.6.20 agent binary
DEST=/var/www/gururmm/downloads/gururmm-agent-linux-amd64-0.6.20
sudo cp /home/guru/gururmm/agent/target/release/gururmm-agent "$DEST"
sudo chmod 755 "$DEST"
sha256sum "$DEST" | awk '{print $1}' | sudo tee "$DEST.sha256" > /dev/null
sudo ln -sf gururmm-agent-linux-amd64-0.6.20 \
  /var/www/gururmm/downloads/gururmm-agent-linux-amd64-latest
```

14:47 UTC scan confirmation:
```
INFO  gururmm_server::updates::scanner: Scanned 50 agent binaries across 5 platform/arch combinations
INFO  gururmm_server::updates::scanner: Agent needs update: 0.6.19 -> 0.6.20 (linux-amd64, channel=stable)
INFO  gururmm_server::ws: Dispatching update to connected agent 8cd0440f-...  on heartbeat: 0.6.19 -> 0.6.20
INFO  gururmm_server::ws: Agent 8cd0440f-... reconnected after update: 0.6.19 -> 0.6.20
```

---

## Pending / Incomplete Tasks

- **Fleet update to 0.6.20**: Rollout underway automatically on heartbeat. Agents update one at a time as they heartbeat. Offline agents will update on next reconnect.
- **AD2 (0.6.1, offline since 2026-04-20)**: Requires physical or VPN access. Unchanged.
- **BB-SERVER enrollment loop**: `duplicate key value violates unique constraint "idx_agents_site_device"` on every WS connect. Agent already enrolled, auth flow re-attempting first-time enrollment. Needs code fix.
- **`unsupported Unicode escape sequence` on hardware inventory for IMC1**: Logged at WARN after 0.6.19 update. Unresolved — likely a problematic character in a serial number or software name field.
- **Policy wiring plan** (`ticklish-questing-stallman.md`): Full end-to-end policy propagation deferred. Server sends ConfigUpdate on connect (wired), agent-side handling not complete.
- **Windows/macOS agents**: Only Linux 0.6.20 built this session. Windows and macOS builds require the `build-agents.sh` script (which handles cross-compilation / signing). Not run this session.
- **LHM bundling in MSI**: LibreHardwareMonitor files not in build pipeline; self-healing download not implemented.
- **Build lock**: No flock on `build-agents.sh` to prevent concurrent invocations.
- **Safesite Glendale MSI machine**: Waiting for user to be away to push DisplayLink driver update.

---

## Reference Information

- **Feature commit**: `0c60d36` — feat: network discovery hostname lookup, subnet auto-detection, fix IP display and new_devices count
- **Version bump commit**: `c97b0f3` — chore: bump agent version to 0.6.20 (hostname lookup + subnet reporting)
- **Gururmm Gitea repo**: `http://172.16.3.20:3000/azcomputerguru/gururmm`
- **Downloads dir**: `/var/www/gururmm/downloads/` (from `DOWNLOADS_DIR` in `/opt/gururmm/.env`)
- **Agent 0.6.20 sha256**: `ed5ce77cd5d9e30ee9f5a73a6904e7f6667041ab9fff798e7d255a905efbf1a2`
- **New API endpoint**: `GET /api/agents/:id/discovery/subnets` → returns `Vec<String>` of CIDR subnets from agent's reported network interfaces
- **Discovery DB fixes**: `server/src/db/discovery.rs` — `host(ip_address)` instead of `ip_address::text`; `complete_scan()` computes `new_devices` via CTE
- **Subnet field**: agents now report `ipv4_subnets: Vec<String>` alongside `ipv4_addresses` in `NetworkInterface` struct (both agent and server side)
- **PTR lookup**: `agent/src/discovery/mod.rs` — `dns_lookup::lookup_addr(&ip)` wrapped in `spawn_blocking`