docs(caddy): add agent0.localhost reverse proxy + RFC 6761 wildcard learning

- New site: https://agent0.localhost -> reverse_proxy 192.168.0.141:8090 (first non-localhost backend; remote LAN host running uvicorn) - Config in dedicated /etc/caddy/conf.d/agent0.localhost.conf - Regenerated mkcert cert: 19 -> 20 SANs, valid until 2028-10-21 - Key learning: *.localhost wildcard is NOT honored by curl/system trust even for single-label subdomains - .localhost is a special-use TLD per RFC 6761; every subdomain needs an explicit SAN. Corrects prior assumption in stack.md and manual-overrides.md. Updates: docs/tech/stack.md, docs/tech/manual-overrides.md, CHANGELOG.md
docs: add memory inventory and migration log
2026-07-21 14:08:07 +02:00 · 2026-07-13 17:29:00 +02:00 · 2026-07-12 13:10:21 +02:00
4 changed files with 42 additions and 8 deletions
@@ -18,6 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Identified failed `archlinux-keyring-wkd-sync.service` in system health check.

 ### Added
+- Added `agent0.localhost` (-> `reverse_proxy 192.168.0.141:8090`, `flush_interval -1`) to Caddy in a dedicated file `/etc/caddy/conf.d/agent0.localhost.conf`. First non-localhost backend (remote LAN host running a uvicorn app). Regenerated mkcert cert to add explicit `agent0.localhost` SAN; cert now has 20 SANs, valid until 2028-10-21 (2026-07-21). Key learning: the `*.localhost` wildcard is NOT honored by curl/system trust even for single-label subdomains - `.localhost` is a special-use TLD per RFC 6761, so every subdomain needs an explicit SAN. This corrects the prior assumption in `docs/tech/stack.md` and `docs/tech/manual-overrides.md` that single-label subdomains were wildcard-covered. Total `*.localhost` sites now 18.
+- Regenerated mkcert cert at `/etc/caddy/localhost{,-key}.pem` to add explicit SANs for `platform.localhost`, `packages.localhost`, and `onlyoffice.docs.localhost` (pre-existing in Caddy config but missing from cert, causing TLS validation failures). Cert now has 19 SANs, valid until 2028-10-12 (2026-07-12).
+- Added `platform.localhost` (-> `localhost:10080`, amicron-platform Docker) and `packages.localhost` (-> `localhost:20080`, satis Docker) to `/etc/caddy/conf.d/localhost-dev.conf`. Docker port mappings updated: `~/internal/amicron-platform/docker-compose.override.yml` `10080:80`, `~/internal/satis/docker-compose.yml` nginx `20080:80`. Both upstreams plain HTTP on high ports; Caddy terminates TLS. Also documented `onlyoffice.docs.localhost` in `docs/tech/stack.md` (pre-existing in Caddy config, was undocumented). Total `*.localhost` sites now 17. The three form the local E2E test triangle: `platform.localhost` (ERP) -> `packages.localhost` (Satis) -> shared Firebird 3.0.14 database (token validation), mirroring the production `platform.auc.de` + `packages.auc.de` + shared Firebird setup (2026-07-12).
 - Enabled click-and-drag window movement and resizing under the SUPER modifier, and enabled border dragging to resize tiled windows natively, updating both the Hyprland configuration template and keybindings cheatsheet (2026-07-09).
 - Documented local dev services in `docs/tech/stack.md`: Caddy (systemd `caddy.service` on port 443) with 14 `*.localhost` sites and mkcert TLS at `/etc/caddy/`. Registered as a manual override in `docs/tech/manual-overrides.md` (no `caddy` Ansible role exists yet) (2026-07-06).
 - Investigation learning record `docs/learnings/2026-07-06-caddy-onlyoffice-mcp-sse-investigation.md`: Caddy `context canceled` SSE aborts (~1.5ms) on `onlyoffice.localhost/mcp` forwarded to `localhost:3847` (OnlyOffice MCP server). Upstream verified alive (HTTP 406 to plain GET = expected). Handed off to GitLab issue [satware/mcp/onlyoffice#92](https://gitlab.satware.com/satware/mcp/onlyoffice/-/work_items/92) with 5 hypotheses, 7 investigation tasks, and a proposed Caddy `flush_interval -1` + `transport http { versions 1.1 }` mitigation (not applied yet) (2026-07-06).
@@ -6,7 +6,7 @@ tags:
  - manual-overrides
  - infrastructure
  - configuration
-last_updated: '2026-07-06'
+last_updated: '2026-07-21'
 ---

 # Manual System Overrides
@@ -22,6 +22,9 @@ This document tracks all persistent system changes implemented manually that are

 | Date | Change | Rationale | Ansible Status |
 |------|--------|-----------|----------------|
+| 2026-07-21 | Added `agent0.localhost` (-> `reverse_proxy 192.168.0.141:8090`, `flush_interval -1`) in dedicated file `/etc/caddy/conf.d/agent0.localhost.conf`. First non-localhost backend (remote LAN host running a uvicorn app). Regenerated mkcert cert to add explicit `agent0.localhost` SAN; cert now has 20 SANs total, valid until 2028-10-21. Old cert/key backed up as `localhost{,-key}.pem.bak.<ts>`. Total `*.localhost` sites now 18. | User request to expose the remote agent backend on local HTTPS. Key learning: the `*.localhost` wildcard is NOT honored by curl/system trust even for single-label subdomains - `.localhost` is a special-use TLD (RFC 6761), so every subdomain needs an explicit SAN. This corrects the prior assumption that single-label subdomains were covered by the wildcard. | Same as parent Caddy row - candidate for Ansible role when issue #92 resolves |
+| 2026-07-12 | Regenerated mkcert cert at `/etc/caddy/localhost{,-key}.pem` to add explicit SANs for `platform.localhost`, `packages.localhost`, and `onlyoffice.docs.localhost` (the latter was pre-existing in Caddy config but missing from the cert, causing TLS validation failures). Cert now has 19 SANs total, valid until 2028-10-12. | `onlyoffice.docs.localhost` is a multi-label subdomain not covered by `*.localhost` wildcard. Required explicit SAN. | Same as parent Caddy row |
+| 2026-07-12 | Added `platform.localhost` (-> `localhost:10080`) and `packages.localhost` (-> `localhost:20080`) to `/etc/caddy/conf.d/localhost-dev.conf`. Docker port mappings: `~/internal/amicron-platform/docker-compose.override.yml` `10080:80`, `~/internal/satis/docker-compose.yml` nginx `20080:80`. Both upstreams are plain HTTP on high ports; Caddy terminates TLS. Also documented `onlyoffice.docs.localhost` (pre-existing in config, was undocumented). Total sites now 17. | Local HTTPS dev for amicron-platform (ERP), satis (Composer package repository), and shared Firebird 3.0.14 database. The three form the local E2E test triangle: `platform.localhost` (ERP) -> `packages.localhost` (Satis) -> Firebird (token validation). Mirrors the production `platform.auc.de` + `packages.auc.de` + shared Firebird setup. | Same as parent Caddy row - candidate for Ansible role when issue #92 resolves |
 | 2026-07-06 | Caddy reverse-proxy + mkcert TLS at `/etc/caddy/` (`Caddyfile` + `conf.d/localhost-dev.conf` + `localhost{,-key}.pem`) | Local HTTPS dev for 14 `*.localhost` sites (mcp, artifacts, onlyoffice, demo.satware.com clone, 10 placeholders). Caddy runs as systemd `caddy.service` on port 443. NOT managed by this repo - no `caddy` Ansible role exists. The `onlyoffice.localhost` site (-> `localhost:3847`) is emitting `context canceled` SSE aborts; see `docs/learnings/2026-07-06-caddy-onlyoffice-mcp-sse-investigation.md` and GitLab issue [satware/mcp/onlyoffice#92](https://gitlab.satware.com/satware/mcp/onlyoffice/-/work_items/92). | Candidate for Ansible role (`caddy` + `mkcert`); defer until issue #92 resolves to avoid masking root cause |
 | 2026-07-03 | Patched `remmina-plugin-rdp.so` in `~/.config/remmina/plugins/` | Remmina 1.4.43 crashes (SIGSEGV) on Wayland when `keymap` is set in a profile. Built from `~/external/remmina/` fork with NULL check fix. Alt plugin dir loads before system plugin. MR !2757 submitted upstream. See `docs/learnings/2026-07-03-remmina-wayland-crash-fix.md`. | Remove when upstream fix is released and packaged |
 | 2026-06-17 | Discovered and deleted `br_vm_internal` bridge (10.10.2.0/24) | Externally-created bridge, no NM config file, no VMs attached. Origin unknown — likely ad-hoc `nmcli con add` or manual `brctl` session (Jun 10). Traffic-shaping qdisc (`htb`) suggests prior VM network isolation attempt. Deleted via `nmcli con delete` + `ip link delete`. | N/A (removed) |
@@ -0,0 +1,22 @@
+# Memory — mw-pfeddersheim-workstation
+
+> **Status**: 64 GiB migrated to `homeoffice` on 2026-07-13.
+
+## Current Configuration
+
+4x 8 GiB DDR4-3000 DIMMs = **32 GiB total**, dual-channel (A/B).
+
+| Slot | Size | Type | Speed | Channel |
+|------|------|------|-------|---------|
+| DIMM_A1 | 8 GiB | DDR4 SDRAM | 3000 MT/s | BANK 0 |
+| DIMM_A2 | 8 GiB | DDR4 UDIMM | 3000 MT/s | BANK 1 |
+| DIMM_B1 | 8 GiB | DDR4 UDIMM | 3000 MT/s | BANK 2 |
+| DIMM_B2 | 8 GiB | DDR4 UDIMM | 3000 MT/s | BANK 3 |
+
+Note: DIMM_A1 reports "Unknown" form factor — different brand from the other three DIMMs.
+
+## Migration History
+
+| Date | Change |
+|------|--------|
+| 2026-07-13 | Removed 4x 16 GiB DDR4-2400 DIMMs (64 GiB) and transferred to `homeoffice`. Installed 4x 8 GiB DDR4-3000 DIMMs taken from `homeoffice` in exchange. |
@@ -6,7 +6,7 @@ tags:
  - software-stack
  - inventory
  - tech-stack
-last_updated: '2026-07-06'
+last_updated: '2026-07-12'
 ---

 # Software Stack - mw-pfeddersheim-workstation
@@ -106,10 +106,10 @@ for the active Caddy/OnlyOffice investigation.
 |------|-------|
 | Package | `caddy` (pacman) |
 | Service | `caddy.service` (enabled, runs as `caddy` user) |
-| Config | `/etc/caddy/Caddyfile` + `/etc/caddy/conf.d/localhost-dev.conf` |
-| TLS | mkcert-generated pair at `/etc/caddy/localhost{,-key}.pem` |
+| Config | `/etc/caddy/Caddyfile` + `/etc/caddy/conf.d/*.conf` (main site file `localhost-dev.conf`, plus per-service files like `agent0.localhost.conf`) |
+| TLS cert | mkcert-generated pair at `/etc/caddy/localhost{,-key}.pem`; includes explicit SANs for all 20 hostnames, valid until 2028-10-21. The `*.localhost` wildcard is NOT honored by curl/system trust even for single-label subdomains like `agent0.localhost` (empirically verified 2026-07-21: `.localhost` is a special-use TLD per RFC 6761); every subdomain MUST be listed explicitly. Multi-label hosts like `onlyoffice.docs.localhost` additionally require explicit SANs because wildcards only cover one level. |
 | Admin endpoint | Unix socket `/run/caddy/admin.socket` |
-| Sites | 14 `*.localhost` virtual hosts (see table below) |
+| Sites | 18 `*.localhost` virtual hosts (see table below) |

 #### `*.localhost` sites

@@ -120,10 +120,16 @@ for the active Caddy/OnlyOffice investigation.
 | `onlyoffice.localhost` | `reverse_proxy localhost:3847` | OnlyOffice MCP server; emitting `context canceled` SSE aborts (issue [#92](https://gitlab.satware.com/satware/mcp/onlyoffice/-/work_items/92)) |
 | `project-1.localhost` ... `project-10.localhost` | `respond "project-N - placeholder"` | 10 reserved placeholders |
 | `demo.satware.com.localhost` | `reverse_proxy localhost:38081` | webdevops/php-apache-dev container |
+| `platform.localhost` | `reverse_proxy localhost:10080` | amicron-platform Docker (Symfony 7.4 + Vue 3 + Firebird 3.0.14); `~/internal/amicron-platform` |
+| `packages.localhost` | `reverse_proxy localhost:20080` | satis Docker (Composer package repository with token-based access control); `~/internal/satis` |
+| `onlyoffice.docs.localhost` | `file_server` root `/home/mw/internal/onlyoffice/docs-site/dist` | Starlight static docs build |
+| `agent0.localhost` | `reverse_proxy 192.168.0.141:8090` | First non-localhost backend (remote host on LAN, uvicorn app). Config in dedicated `/etc/caddy/conf.d/agent0.localhost.conf`. `flush_interval -1` enabled. |

-Wildcard cert covers one level only. `demo.satware.com.localhost` works
-(single label under `*.localhost`); deeper nesting (e.g.
-`sub.demo.satware.com.localhost`) would NOT be covered.
+Wildcard `*.localhost` only matches single-label subdomains (e.g. `mcp.localhost`)
+AND is not honored by curl/system trust for the `.localhost` special-use TLD
+(RFC 6761) - every subdomain needs an explicit SAN. Multi-label hosts like
+`onlyoffice.docs.localhost` and `demo.satware.com.localhost` require explicit
+SANs for both reasons.

 ### Useful Caddy commands