docs: correct file naming convention — foundational docs are ALL-CAPS

The previous naming guide was incomplete. The actual convention is:

**Foundational docs:** ALL-CAPS
- Root entry-points: AGENTS.md, README.md (discovery paths)
- Agent instruction: .agents/OIKOS.md, .agents/HERMES.md (docs agents read first)
- Reference docs: GLOSSARY.md (like classic repo files: LICENSE, CHANGELOG)

**Content pages:** lowercase-with-dashes
- Containers: <id>-<name>.md (ID from inventory)
- Infrastructure: <topic>.md (system description)
- Plans/investigations: YYYY-MM-DD-slug.md (date-sorted)
- Section indices: README.md (conventional)

**Skills:** special pattern
- <name>/SKILL.md where <name> is lowercase-with-dashes
- SKILL.md filename is always uppercase — signpost for tools and humans

Uppercase is reserved for foundational/signpost docs; all paths otherwise use
lowercase with hyphens (no underscores).

Updated page-templates.md with expanded explanation, and updated AGENTS.md +
README.md to reference the corrected convention.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.agents/shared/page-templates.md

@@ -6,14 +6,25 @@ in [writing-style.md](writing-style.md); the layer model (sources / wiki / index
 
 ## File naming
 
-- **Root entry-point files:** ALL-CAPS (e.g. `AGENTS.md`, `README.md`). These are discovery paths — agents and humans find them first.
-- **Container pages:** `<id>-<name>.md` (e.g. `101-jellyfin.md`, `132-rclone.md`). The `<id>` is the LXC/VM ordinal from `inventory.yaml`.
-- **Infrastructure / cross-cutting pages:** lowercase-with-dashes (e.g. `dns.md`, `auto-deploy.md`, `mesh.md`). Describes a system, not a specific node.
-- **Plans / investigations / time-stamped docs:** `YYYY-MM-DD-<slug>.md` (e.g. `2026-07-05-oikos-prometheus-lxc.md`). Date first, then lowercase slug.
-- **Skills / runbooks:** folder name is lowercase-with-dashes (e.g. `client-enrollment/`), contains `SKILL.md` (uppercase). Emphasizes the skill-name for navigation.
-- **Indices:** `README.md` or `index.md` (both lowercase). Prefer `README.md` for folders; use `index.md` only when both an intro page and a listing coexist.
+**Foundational / entry-point files:** ALL-CAPS
 
-All paths use lowercase letters, numbers, and hyphens (no underscores). This keeps them readable, shell-friendly, and consistent across the repo.
+- **Root level:** `AGENTS.md`, `README.md` — discovery paths for agents and humans.
+- **Agent instruction** (under `.agents/`): `OIKOS.md`, `HERMES.md` — foundational docs agents read before acting.
+- **Reference docs:** `GLOSSARY.md` — lookup reference (like classic repo conventions: LICENSE, CHANGELOG, GLOSSARY).
+
+**Content / narrative pages:** lowercase-with-dashes, date-prefixed as needed
+
+- **Container pages:** `<id>-<name>.md` (e.g. `101-jellyfin.md`, `132-rclone.md`). The `<id>` is the LXC/VM ordinal from `inventory.yaml`.
+- **Infrastructure / cross-cutting pages:** `<topic>.md` (e.g. `dns.md`, `auto-deploy.md`, `mesh.md`). Describes a system, not a specific node.
+- **Plans / investigations:** `YYYY-MM-DD-<slug>.md` (e.g. `2026-07-05-oikos-prometheus-lxc.md`). Date-sorted; slug is lowercase.
+- **Section indices:** `README.md` (lowercase, conventional). Prefer in folders; `index.md` only if both intro prose and listing coexist.
+
+**Skills / runbooks:** special case
+
+- **Folder structure:** `<name>/SKILL.md` where `<name>` is lowercase-with-dashes (e.g. `client-enrollment/SKILL.md`).
+- **The filename SKILL.md is always uppercase** — it acts as a signpost so tools and humans instantly recognize it as a skill.
+
+**General rules:** All paths use lowercase letters, numbers, and hyphens (no underscores). Uppercase is reserved for foundational docs (entry points + instruction) and filenames that signify document type (SKILL.md, GLOSSARY.md, etc.).
 
 ## Voice