Update tech_docs/its_the_new_style_design.md

tech_docs/its_the_new_style_design.md

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+Let’s park the tooling and simply **sweep the room for context we may have dropped**.  
+Below is a quiet, point-by-point reconciliation of every layer we have spoken about, from the first line of `dnsmasq` to the last haiku syllable.  If anything is missing, we’ll surface it now before we move forward.
+
+---
+
+### 1. Physical / Logical topology (never changed)
+- One Debian box, everything on it.
+- Three layer-3 zones on dedicated `/24`s + one `/28` for infra.
+- Static vs DHCP split is **exactly half** each subnet (`.1-.126`, `.129-.254`, `.127` mute).
+- Gateways, DNS, and any future service IPs live in the static half.
+
+### 2. Addressing & reverse symmetry
+- Forward zones  
+  `lan.mycorp.net` → `10.0.0.0/24`  
+  `dmz.mycorp.net` → `10.0.1.0/24`  
+  `infra.mycorp.net` → `10.0.255.0/28`
+- Reverse zones  
+  `0.0.10.in-addr.arpa`  
+  `1.0.10.in-addr.arpa`  
+  `255.0.10.in-addr.arpa`  
+  (mirrors left-to-right, right-to-left).
+
+### 3. Hostname grammar (canonical)
+- Pattern: `role-seq.zone.root`  
+  role = 2–4 fixed-width chars  
+  seq  = zero-padded 01-99  
+  zone = lan | dmz | infra  
+  root = mycorp.net
+- Real examples already locked in:
+  - `ns-01.infra.mycorp.net` 10.0.255.1  
+  - `gw-01.lan.mycorp.net` 10.0.0.1  
+  - `web-05.dmz.mycorp.net` 10.0.1.5
+
+### 4. dnsmasq configuration (single source of truth today)
+- `/etc/dnsmasq.d/00-symmetry.conf` drives the three zones + infra subnet.
+- `/etc/dnsmasq-static-hosts` carries all static leases.
+- No other include files; future changes must remain additive (`20-*.conf`, `30-*.conf`).
+
+### 5. CA & ACME integration (already bolted on)
+- `step-ca` runs on the same host, port 443.
+- Internal root trusted everywhere.
+- DNS-01 via `dnsmasq` temp file (`/var/lib/dnsmasq/acme-challenge.hosts`).
+- Cert lifetimes tied to the *meta-themes* (7-day static, 5-day DHCP, prime-hour renewals).
+
+### 6. Meta-themes currently wired into the stack
+| Theme | Concrete hook |
+|---|---|
+| **Clock-face Symmetry** | static `.1-.126`, DHCP `.129-.254`, `.127` reserved |
+| **Piano-Key Roles** | role tokens trimmed or padded to 2-4 chars |
+| **Monospaced Zen** | fixed-width logs, fixed 7-day/5-day cert TTLs |
+| **Prime Silence** | renew cron at 2,3,5,7,11,13,17,19,23 only |
+| **Roman-Serial Minimalism** | **max 3 glyphs before first dot** |
+| **Mirror-fold DNS** | forward & reverse labels are perfect palindromes |
+| **Mondrian Palette** | infra=black, lan=red, dmz=blue (future guest=yellow) |
+| **Haiku Length** | expiry alerts follow 5-7-5 syllable form |
+
+### 7. Things *not* yet decided (gaps to close)
+1. **Guest / future zone naming** – if we ever add a fourth colour, does it still fit the 4-colour Mondrian rule?
+2. **IPv6** – no mention yet; does the schema extend to a parallel `/64` for each zone?
+3. **Service discovery beyond DNS** – mDNS, DHCP option 119, or SRV records; are they allowed to break the glyph rule?
+4. **Fate of `.127` broadcast silence** – do we explicitly black-hole it in iptables or leave it purely by convention?
+5. **HA / second node** – if we ever stand up a second Debian box, does it become `ns-02.infra` or do we rename the first to `ns-01`?
+6. **Rotation of root CA** – internal CA lifetime, intermediate naming, key length migration path.
+
+---
+
+### Next micro-step
+Before we write templates or migrate engines, we simply **decide the six open questions above**.  
+Once each has a one-line answer, every future layer (Kea, BIND, NetBox, second node, IPv6) will *snap in* without breaking the symmetry or haiku.
+
+Shall we tick those six boxes now?
+
+---
+
 Below is a **complete, end-to-end recipe** to spin up a **proper three-node Docker Swarm** on **Debian 12 minimal VMs** while honoring:
 
 - the **dual-stack IPv4/IPv6 numbering** you already locked in