docs(.profile): initial organization profile

Adds the README.md that serves as the Einherjar framework's landing page
on the Gitea organization.

Covers the framework name and mythology, the 14-module inventory with
dependency relationships, the ASCII dependency graph, the contracts
governance law, and the "for those who come after" philosophy section.

.gitignore

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+# ── Release workflow helpers ──────────────────────────────────────────────────
+COMMIT.md
+PR.md
+
+# ── OS artifacts ─────────────────────────────────────────────────────────────
+.DS_Store
+Thumbs.db
+
+# ── Editor artifacts ──────────────────────────────────────────────────────────
+.idea/
+.vscode/
+*.swp
+*.swo
+*~

README.md

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+# Einherjar
+
+> *For those who come after.*
+
+A Go framework built from battle-tested production code — organized for teams,
+documented for the developer who was never in the room.
+
+---
+
+## The Name
+
+In Norse mythology, the **Einherjar** are the chosen — warriors who fell in battle
+and were carried to Valhalla by the Valkyries. There they train, day after day,
+preparing for Ragnarök. Not for themselves. For what comes after.
+
+This framework carries that name deliberately. Every interface defined here, every
+architectural decision recorded, every module boundary enforced exists for the
+developer who will build on this code without ever speaking to its authors. No
+tribal knowledge. No implicit conventions. **The documentation is the system.**
+
+---
+
+## What Is This
+
+Einherjar is a collection of composable Go modules, each addressing one
+infrastructure concern. The mental model is Spring Boot starters — not one framework
+binary, but a curated set of independent modules with isolated dependency graphs.
+
+Each module is its own `go.mod`. Import only what your service needs. A minimal CRUD
+API requires exactly three: **`core` + `web` + one `db-*`**.
+
+---
+
+## Modules
+
+| Module | Purpose | Depends on |
+|---|---|---|
+| [`contracts`][contracts] | Pure interfaces. The constitution of the framework. | — |
+| [`core`][core] | Lifecycle, logging, errors, validation | `contracts` |
+| [`web`][web] | HTTP server, middleware, routing, health | `contracts` `core` |
+| [`auth`][auth] | Auth middleware, RBAC | `contracts` `web` `core` |
+| [`auth-jwt`][auth-jwt] | JWT signing, token pairs, refresh | `contracts` `auth` `core` |
+| [`auth-firebase`][auth-firebase] | Firebase authentication | `contracts` `auth` `core` |
+| [`db-postgres`][db-postgres] | PostgreSQL client | `contracts` `core` |
+| [`db-mysql`][db-mysql] | MySQL client | `contracts` `core` |
+| [`db-sqlite`][db-sqlite] | SQLite client | `contracts` `core` |
+| [`cache-valkey`][cache-valkey] | Valkey / Redis-compatible cache | `contracts` `core` |
+| [`storage-minio`][storage-minio] | Object storage | `contracts` `core` |
+| [`telemetry`][telemetry] | OpenTelemetry — `main` packages only | `contracts` `core` |
+| [`worker`][worker] | Concurrent background worker pool | `contracts` `core` |
+| [`httpclient`][httpclient] | Resilient outbound HTTP client | `contracts` `core` |
+
+---
+
+## Dependency Graph
+
+```
+contracts
+└── core
+     ├── web
+     │    └── auth
+     │         ├── auth-jwt
+     │         └── auth-firebase
+     ├── db-postgres
+     ├── db-mysql
+     ├── db-sqlite
+     ├── cache-valkey
+     ├── storage-minio
+     ├── telemetry          ← import from main only
+     ├── worker
+     └── httpclient
+```
+
+Data modules (`db-*`, `cache-*`, `storage-*`) never import `web`. Repositories do
+not know HTTP exists. This boundary is absolute.
+
+---
+
+## The Law
+
+`contracts` is the constitution of this framework — pure interfaces, zero
+dependencies, permanent signatures. Changes flow **outward from `contracts`**, never
+inward. Before any change to `contracts`, the blast radius is calculated: which
+interfaces are affected, which modules implement them, which modules consume those.
+Release sequence: `contracts` first, then implementors, then consumers.
+
+Adding a method to a published interface is a breaking change in Go. It is not
+permitted without a major version bump and coordinated updates across all
+implementing modules.
+
+---
+
+## For Those Who Come After
+
+Good code is not written for the machine. It is not even written for the deadline.
+It is written for the person who will read it at 11pm six months from now, under
+pressure, trying to understand what this thing does and why it was built this way.
+
+Every ADR in this organization exists because a decision was made and the reasoning
+behind it matters as much as the outcome. Every interface in `contracts` is as small
+as it can be because the developer implementing it in a new context deserves to know
+exactly what is required and nothing more.
+
+This is the standard. Not the deadline.
+
+---
+
+[contracts]: https://code.nochebuena.dev/einherjar/contracts
+[core]: https://code.nochebuena.dev/einherjar/core
+[web]: https://code.nochebuena.dev/einherjar/web
+[auth]: https://code.nochebuena.dev/einherjar/auth
+[auth-jwt]: https://code.nochebuena.dev/einherjar/auth-jwt
+[auth-firebase]: https://code.nochebuena.dev/einherjar/auth-firebase
+[db-postgres]: https://code.nochebuena.dev/einherjar/db-postgres
+[db-mysql]: https://code.nochebuena.dev/einherjar/db-mysql
+[db-sqlite]: https://code.nochebuena.dev/einherjar/db-sqlite
+[cache-valkey]: https://code.nochebuena.dev/einherjar/cache-valkey
+[storage-minio]: https://code.nochebuena.dev/einherjar/storage-minio
+[telemetry]: https://code.nochebuena.dev/einherjar/telemetry
+[worker]: https://code.nochebuena.dev/einherjar/worker
+[httpclient]: https://code.nochebuena.dev/einherjar/httpclient