diff --git a/.gitea/workflows/publish-wiki.yml b/.gitea/workflows/publish-wiki.yml
new file mode 100644
index 0000000..07ff1c0
--- /dev/null
+++ b/.gitea/workflows/publish-wiki.yml
@@ -0,0 +1,38 @@
+# Publish the project's wiki pages to the git host's wiki.
+#
+# On a push to main that changes docs/wiki/, this workflow calls the reusable
+# workflow of TirSystem/github-action, which copies the Markdown pages of
+# docs/wiki/ to the wiki of this repository (framework/process/wiki.md says
+# what the folder holds: English and the PO language as a minimum).
+#
+# INSTALLING THIS FILE IS THE OPT-IN. There is no marker file. A project that
+# does not copy it publishes nothing.
+#
+# Copy it to .gitea/workflows/publish-wiki.yml. Then:
+#   1. Create the secret TOKEN_FOR_GITEA_WIKI in the organization of the
+#      repository: a Gitea token with scope write:repository for a user that
+#      can write this repository (see guides/credentials.md of github-action).
+#   2. Enable the wiki in the repository settings.
+#   3. Keep @v1, or pin the exact release tag together with tools-ref.
+# A runner must be registered for the repository (or its organization).
+#
+# prune: "true" deletes wiki pages that are not in docs/wiki/, so the wiki
+# always equals the folder. Leave it "false" to keep hand-written pages.
+
+name: Publish wiki
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - "docs/wiki/**"
+  workflow_dispatch:
+
+jobs:
+  wiki:
+    uses: TirSystem/github-action/.gitea/workflows/publish-wiki-pages.yml@v1
+    with:
+      wiki_dir: docs/wiki
+      prune: "true"
+    secrets:
+      TOKEN_FOR_GITEA_WIKI: ${{ secrets.TOKEN_FOR_GITEA_WIKI }}
diff --git a/.gitignore b/.gitignore
index efabc00..d9ddc9a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,6 @@ docs/doxygen/
 .vscode/
 .DS_Store
 Thumbs.db
+
+# AI prompt log (the repository is public)
+/docs/ai-prompts/
diff --git a/README.md b/README.md
index 774bb98..0fd694f 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,124 @@
-# 032-birthday-wisher
+# 🚀 Birthday Wisher
 
+Sends a random birthday letter by e-mail to everyone in `birthdays.csv` whose birthday is today. It is the "normal" level of day 32 of Udemy's *100 Days of Code: The Complete Python Pro Bootcamp*, written for course participants and for anyone who browses the repository for ideas.
+
+## 📚 Table of Contents
+
+- [Overview](#-overview)
+- [Requirements](#-requirements)
+- [Setup](#-setup)
+- [Run](#-run)
+- [Tests](#-tests)
+- [License](#-license)
+- [Links](#-links)
+- [Appendix: Project documents](#-appendix-project-documents)
+
+## 🧭 Overview
+
+The program reads `birthdays.csv`, compares today's month and day with each row, picks one of `letter_templates/letter_1.txt` to `letter_3.txt` at random, replaces `[NAME]` with the person's name and sends the letter through SMTP with STARTTLS (Gmail by default). It uses only the Python standard library, so it has no runtime dependencies.
+
+![A dry run: the letters that would be sent](docs/images/dry-run.png)
+
+| Path | What it is |
+| --- | --- |
+| `src/birthday_wisher/` | The program: `domain`, `application`, `infrastructure` and `presentation` layers, constants in `constants.py` |
+| `tests/` | pytest tests: `unit`, `integration`, `e2e`; all run offline |
+| `birthdays.csv` | The people: `name,email,year,month,day` (dummy data) |
+| `letter_templates/` | Three letters with the `[NAME]` placeholder |
+| `Doxyfile` | Doxygen configuration; the source carries Doxygen comments |
+| `docs/` | Project documents, images and the wiki in English, Danish and Bahasa Malaysia |
+
+## 📋 Requirements
+
+- Python 3.13 or newer, to run the program and the tests.
+- A Gmail address and an app password, only to send real e-mail. A dry run and the tests need neither.
+- Doxygen, only to build the API documentation (optional).
+
+## 🛠️ Setup
+
+Create and use a local virtual environment, then upgrade pip and install the project with its test tools:
+
+```bash
+python -m venv .venv
+```
+
+Activate it. On Windows (PowerShell): `.venv\Scripts\Activate.ps1`. On Windows (cmd): `.venv\Scripts\activate`. On Linux and macOS: `source .venv/bin/activate`.
+
+```bash
+python -m pip install --upgrade pip
+python -m pip install -e ".[dev]"
+```
+
+![Creating the .venv](docs/images/venv-setup.png)
+
+To send real e-mail, set two environment variables (see `.env.example`; never commit a real `.env`):
+
+```bash
+export GMAIL_ADDRESS="you@gmail.com"
+export GMAIL_TOKEN="your-app-password"
+```
+
+On Windows PowerShell use `$env:GMAIL_ADDRESS = "you@gmail.com"` and `$env:GMAIL_TOKEN = "your-app-password"`.
+
+## ▶️ Run
+
+Print the letters instead of sending them (pretend today is 17 October 2000):
+
+```bash
+python -m birthday_wisher --dry-run --today 2000-10-17
+```
+
+Send the letters for today's birthdays:
+
+```bash
+python -m birthday_wisher
+```
+
+Options: `--dry-run`, `--today YYYY-MM-DD`, `--csv FILE`, `--letters FOLDER`. The program exits with status 1 when setup is wrong or a letter could not be sent. Generate the API documentation with `doxygen Doxyfile` (output in `docs/doxygen/`).
+
+## 🧪 Tests
+
+```bash
+python -m pytest
+```
+
+The tests use a fake SMTP connection and temporary files. They need no network, no `.env` and no credentials.
+
+![The test run](docs/images/tests.png)
+
+## 📄 License
+
+GNU Affero General Public License v3.0, see [LICENSE](LICENSE).
+
+## 🔗 Links
+
+- [Repository][repository]
+- [Documentation][documentation]
+- [Issue tracker][issues]
+
+## 📎 Appendix: Project documents
+
+| Document | What it tells you |
+| --- | --- |
+| [AGENTS.md][agents] | The rules AI agents follow in this repository |
+| [Business Case][BC-001] | Why the project exists, its scope and success criteria |
+| [Stakeholder Analysis][SA-001] | Who is involved; the stakeholder IDs used for owners and reviewers |
+| [Project Plan][PP-001] | The gateways and their schedule |
+| [Milestones][milestones] | One document per gateway: Go/No-Go criteria and tasks |
+| [Artifact registry][registry] | Where each artifact type lives, the next version, the PO language and domain |
+| [Framework README][framework-readme] | The framework this project uses |
+| [Framework changelog][framework-changelog] | What changed in each framework release |
+
+---
+
+[repository]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher
+[documentation]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/wiki
+[issues]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/issues
+[agents]: ./AGENTS.md
+[BC-001]: ./docs/business-case.md
+[SA-001]: ./docs/stakeholder-analysis.md
+[PP-001]: ./docs/project-plan.md
+[milestones]: ./docs/milestones/
+[registry]: ./docs/artifact-registry.md
+[framework-readme]: ./framework/README.md
+[framework-changelog]: ./framework/CHANGELOG.md
diff --git a/docs/images/dry-run.png b/docs/images/dry-run.png
new file mode 100644
index 0000000..a52dcea
Binary files /dev/null and b/docs/images/dry-run.png differ
diff --git a/docs/images/tests.png b/docs/images/tests.png
new file mode 100644
index 0000000..347a7f8
Binary files /dev/null and b/docs/images/tests.png differ
diff --git a/docs/images/venv-setup.png b/docs/images/venv-setup.png
new file mode 100644
index 0000000..543e5df
Binary files /dev/null and b/docs/images/venv-setup.png differ
diff --git a/docs/project-plan.md b/docs/project-plan.md
index 166a11d..f55148d 100644
--- a/docs/project-plan.md
+++ b/docs/project-plan.md
@@ -29,9 +29,9 @@ This plan schedules the three phases that deliver the birthday wisher of [BC-001
 
 | Gateway | Document | Window | Decision date | Owner | Stories | Main deliverable | Milestone |
 | --- | --- | --- | --- | --- | --- | --- | --- |
-| G1 Project setup | [MIL-001] | 2026-10-17 to 2026-10-18 | 2026-10-18 | S01 | none (plain tasks) | Skeleton, tooling, repository metadata | |
-| G2 Core | [MIL-002] | 2026-10-18 to 2026-10-19 | 2026-10-19 | S01 | none (plain tasks) | Working, tested birthday wisher | |
-| G3 Documentation | [MIL-003] | 2026-10-19 to 2026-10-20 | 2026-10-20 | S01 | none (plain tasks) | README, tri-lingual wiki, screenshots | |
+| G1 Project setup | [MIL-001] | 2026-10-17 to 2026-10-18 | 2026-10-18 | S01 | none (plain tasks) | Skeleton, tooling, repository metadata | [M-188] |
+| G2 Core | [MIL-002] | 2026-10-18 to 2026-10-19 | 2026-10-19 | S01 | none (plain tasks) | Working, tested birthday wisher | [M-189] |
+| G3 Documentation | [MIL-003] | 2026-10-19 to 2026-10-20 | 2026-10-20 | S01 | none (plain tasks) | README, tri-lingual wiki, screenshots | [M-190] |
 
 ```plantuml
 @startgantt
@@ -85,3 +85,6 @@ A No-Go at a gate moves every later date by the time needed to fix and re-review
 [MIL-002]: ./milestones/mil-002-birthday-wisher-core.md
 [MIL-003]: ./milestones/mil-003-documentation-and-publication.md
 [052008f]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/commit/052008f21364120a7c4d5ebbff26b8c16e05a21c
+[M-188]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/milestones/188
+[M-189]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/milestones/189
+[M-190]: https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/milestones/190
diff --git a/docs/wiki/Architecture-da.md b/docs/wiki/Architecture-da.md
new file mode 100644
index 0000000..b2c455a
--- /dev/null
+++ b/docs/wiki/Architecture-da.md
@@ -0,0 +1,14 @@
+# Arkitektur
+
+🌐 [English](Architecture) · **Dansk** · [Bahasa Melayu](Architecture-ms)
+
+Koden følger en lille clean architecture. Imports peger indad.
+
+| Lag | Mappe | Indeholder |
+| --- | --- | --- |
+| Domæne | `src/birthday_wisher/domain/` | `Person` og fejlene |
+| Applikation | `src/birthday_wisher/application/` | Use casen `send_birthday_wishes` og portene (`BirthdayRepository`, `LetterSource`, `MailSender`) |
+| Infrastruktur | `src/birthday_wisher/infrastructure/` | CSV-læser, brevfiler, SMTP-afsender, indstillinger |
+| Præsentation | `src/birthday_wisher/presentation/` | Kommandolinjen og composition root |
+
+Testene afspejler lagene: `tests/unit`, `tests/integration`, `tests/e2e`. Kursets hint om en ordbog med `(month, day)` som nøgle er `birthdays_by_day`.
diff --git a/docs/wiki/Architecture-ms.md b/docs/wiki/Architecture-ms.md
new file mode 100644
index 0000000..15dc24f
--- /dev/null
+++ b/docs/wiki/Architecture-ms.md
@@ -0,0 +1,14 @@
+# Seni Bina
+
+🌐 [English](Architecture) · [Dansk](Architecture-da) · **Bahasa Melayu**
+
+Kod mengikut seni bina bersih yang kecil. Import menuju ke dalam.
+
+| Lapisan | Folder | Mengandungi |
+| --- | --- | --- |
+| Domain | `src/birthday_wisher/domain/` | `Person` dan ralat |
+| Aplikasi | `src/birthday_wisher/application/` | Kes guna `send_birthday_wishes` dan port (`BirthdayRepository`, `LetterSource`, `MailSender`) |
+| Infrastruktur | `src/birthday_wisher/infrastructure/` | Pembaca CSV, fail surat, penghantar SMTP, tetapan |
+| Pembentangan | `src/birthday_wisher/presentation/` | Baris arahan dan composition root |
+
+Ujian mencerminkan lapisan: `tests/unit`, `tests/integration`, `tests/e2e`. Petunjuk kursus tentang kamus berkunci `(month, day)` ialah `birthdays_by_day`.
diff --git a/docs/wiki/Architecture.md b/docs/wiki/Architecture.md
new file mode 100644
index 0000000..e1d5663
--- /dev/null
+++ b/docs/wiki/Architecture.md
@@ -0,0 +1,14 @@
+# Architecture
+
+🌐 **English** · [Dansk](Architecture-da) · [Bahasa Melayu](Architecture-ms)
+
+The code follows a small clean architecture. Imports point inward.
+
+| Layer | Folder | Holds |
+| --- | --- | --- |
+| Domain | `src/birthday_wisher/domain/` | `Person` and the errors |
+| Application | `src/birthday_wisher/application/` | The use case `send_birthday_wishes` and the ports (`BirthdayRepository`, `LetterSource`, `MailSender`) |
+| Infrastructure | `src/birthday_wisher/infrastructure/` | CSV reader, letter files, SMTP mailer, settings |
+| Presentation | `src/birthday_wisher/presentation/` | The command line and the composition root |
+
+The tests mirror the layers: `tests/unit`, `tests/integration`, `tests/e2e`. The course hint of a dictionary keyed by `(month, day)` is `birthdays_by_day`.
diff --git a/docs/wiki/Configuration-da.md b/docs/wiki/Configuration-da.md
new file mode 100644
index 0000000..e7c3a1d
--- /dev/null
+++ b/docs/wiki/Configuration-da.md
@@ -0,0 +1,18 @@
+# Konfiguration
+
+🌐 [English](Configuration) · **Dansk** · [Bahasa Melayu](Configuration-ms)
+
+**Personer.** `birthdays.csv` har overskriften `name,email,year,month,day`. Filen i repositoryet indeholder opdigtede data. Erstat den med dine egne, og hold rigtige adresser ude af git.
+
+**Breve.** `letter_templates/letter_1.txt` til `letter_3.txt`. Teksten `[NAME]` erstattes af personens navn. Ét brev vælges tilfældigt.
+
+**Afsender.** To miljøvariabler:
+
+| Variabel | Betydning |
+| --- | --- |
+| `GMAIL_ADDRESS` | Adressen, e-mailen sendes fra |
+| `GMAIL_TOKEN` | Gmail-app-adgangskode |
+
+`.env.example` viser navnene. Læg aldrig en rigtig `.env` i git; den ignoreres af git. Programmet læser kun miljøet og udskriver aldrig tokenet.
+
+**Konstanter.** Server, port, emne og filnavne står i `src/birthday_wisher/constants.py`.
diff --git a/docs/wiki/Configuration-ms.md b/docs/wiki/Configuration-ms.md
new file mode 100644
index 0000000..f052d5b
--- /dev/null
+++ b/docs/wiki/Configuration-ms.md
@@ -0,0 +1,18 @@
+# Konfigurasi
+
+🌐 [English](Configuration) · [Dansk](Configuration-da) · **Bahasa Melayu**
+
+**Orang.** `birthdays.csv` mempunyai pengepala `name,email,year,month,day`. Fail dalam repositori mengandungi data rekaan. Gantikan dengan data anda sendiri, dan jauhkan alamat sebenar daripada git.
+
+**Surat.** `letter_templates/letter_1.txt` hingga `letter_3.txt`. Teks `[NAME]` diganti dengan nama orang itu. Satu surat dipilih secara rawak.
+
+**Penghantar.** Dua pemboleh ubah persekitaran:
+
+| Pemboleh ubah | Maksud |
+| --- | --- |
+| `GMAIL_ADDRESS` | Alamat e-mel dihantar daripadanya |
+| `GMAIL_TOKEN` | Kata laluan aplikasi Gmail |
+
+`.env.example` menunjukkan namanya. Jangan sekali-kali komit `.env` sebenar; git mengabaikannya. Program hanya membaca persekitaran dan tidak pernah mencetak token.
+
+**Pemalar.** Pelayan, port, subjek dan nama fail ada dalam `src/birthday_wisher/constants.py`.
diff --git a/docs/wiki/Configuration.md b/docs/wiki/Configuration.md
new file mode 100644
index 0000000..d3bffaa
--- /dev/null
+++ b/docs/wiki/Configuration.md
@@ -0,0 +1,18 @@
+# Configuration
+
+🌐 **English** · [Dansk](Configuration-da) · [Bahasa Melayu](Configuration-ms)
+
+**People.** `birthdays.csv` has the header `name,email,year,month,day`. The file in the repository holds dummy data. Replace it with your own, and keep real addresses out of git.
+
+**Letters.** `letter_templates/letter_1.txt` to `letter_3.txt`. The text `[NAME]` is replaced by the person's name. One letter is chosen at random.
+
+**Sender.** Two environment variables:
+
+| Variable | Meaning |
+| --- | --- |
+| `GMAIL_ADDRESS` | Address the e-mail is sent from |
+| `GMAIL_TOKEN` | Gmail app password |
+
+`.env.example` shows the names. Never commit a real `.env`; it is ignored by git. The program reads the environment only and never prints the token.
+
+**Constants.** Server, port, subject and file names are in `src/birthday_wisher/constants.py`.
diff --git a/docs/wiki/Home-da.md b/docs/wiki/Home-da.md
new file mode 100644
index 0000000..c674691
--- /dev/null
+++ b/docs/wiki/Home-da.md
@@ -0,0 +1,17 @@
+# Fødselsdagshilsner
+
+🌐 [English](Home) · **Dansk** · [Bahasa Melayu](Home-ms)
+
+Sender et tilfældigt fødselsdagsbrev på e-mail til alle i `birthdays.csv`, der har fødselsdag i dag. Det er "normal"-niveauet på dag 32 af Udemys *100 Days of Code: The Complete Python Pro Bootcamp*.
+
+![En prøvekørsel](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+| Side | Læs den, når du vil |
+| --- | --- |
+| [Setup](Setup-da) | Oprette et lokalt `.venv` og installere projektet |
+| [Usage](Usage-da) | Køre programmet og læse dets output |
+| [Configuration](Configuration-da) | Ændre personerne, brevene og afsenderen |
+| [Testing](Testing-da) | Køre testene |
+| [Architecture](Architecture-da) | Se, hvordan koden er opbygget |
+
+Programmet bruger kun Pythons standardbibliotek: der er ingen runtime-afhængigheder. Kildekode: [repository](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher).
diff --git a/docs/wiki/Home-ms.md b/docs/wiki/Home-ms.md
new file mode 100644
index 0000000..38d4037
--- /dev/null
+++ b/docs/wiki/Home-ms.md
@@ -0,0 +1,17 @@
+# Pengucap Hari Lahir
+
+🌐 [English](Home) · [Dansk](Home-da) · **Bahasa Melayu**
+
+Menghantar surat hari jadi rawak melalui e-mel kepada semua orang dalam `birthdays.csv` yang berhari jadi hari ini. Ini ialah tahap "normal" hari ke-32 kursus Udemy *100 Days of Code: The Complete Python Pro Bootcamp*.
+
+![Larian percubaan](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+| Halaman | Baca apabila anda ingin |
+| --- | --- |
+| [Setup](Setup-ms) | Mencipta `.venv` setempat dan memasang projek |
+| [Usage](Usage-ms) | Menjalankan program dan membaca outputnya |
+| [Configuration](Configuration-ms) | Menukar senarai orang, surat dan penghantar |
+| [Testing](Testing-ms) | Menjalankan ujian |
+| [Architecture](Architecture-ms) | Melihat bagaimana kod disusun |
+
+Program ini hanya menggunakan pustaka standard Python: tiada kebergantungan masa larian. Kod sumber: [repositori](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher).
diff --git a/docs/wiki/Home.md b/docs/wiki/Home.md
new file mode 100644
index 0000000..1492f2c
--- /dev/null
+++ b/docs/wiki/Home.md
@@ -0,0 +1,17 @@
+# Birthday Wisher
+
+🌐 **English** · [Dansk](Home-da) · [Bahasa Melayu](Home-ms)
+
+Sends a random birthday letter by e-mail to everyone in `birthdays.csv` whose birthday is today. It is the "normal" level of day 32 of Udemy's *100 Days of Code: The Complete Python Pro Bootcamp*.
+
+![A dry run](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+| Page | Read it when you want to |
+| --- | --- |
+| [Setup](Setup) | Create a local `.venv` and install the project |
+| [Usage](Usage) | Run the program and read its output |
+| [Configuration](Configuration) | Change the people, the letters and the sender |
+| [Testing](Testing) | Run the tests |
+| [Architecture](Architecture) | See how the code is organised |
+
+The program uses only the Python standard library: there are no runtime dependencies. Source: [repository](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher).
diff --git a/docs/wiki/Setup-da.md b/docs/wiki/Setup-da.md
new file mode 100644
index 0000000..9764693
--- /dev/null
+++ b/docs/wiki/Setup-da.md
@@ -0,0 +1,20 @@
+# Opsætning
+
+🌐 [English](Setup) · **Dansk** · [Bahasa Melayu](Setup-ms)
+
+Du skal bruge Python 3.13 eller nyere.
+
+```bash
+python -m venv .venv
+```
+
+Aktivér miljøet. Windows PowerShell: `.venv\Scripts\Activate.ps1`. Windows cmd: `.venv\Scripts\activate`. Linux og macOS: `source .venv/bin/activate`.
+
+```bash
+python -m pip install --upgrade pip
+python -m pip install -e ".[dev]"
+```
+
+![Oprettelse af .venv](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/venv-setup.png)
+
+Tilvalget `dev` installerer pytest, ruff og mypy. Selve programmet kræver intet.
diff --git a/docs/wiki/Setup-ms.md b/docs/wiki/Setup-ms.md
new file mode 100644
index 0000000..b347472
--- /dev/null
+++ b/docs/wiki/Setup-ms.md
@@ -0,0 +1,20 @@
+# Persediaan
+
+🌐 [English](Setup) · [Dansk](Setup-da) · **Bahasa Melayu**
+
+Anda memerlukan Python 3.13 atau lebih baharu.
+
+```bash
+python -m venv .venv
+```
+
+Aktifkan persekitaran. Windows PowerShell: `.venv\Scripts\Activate.ps1`. Windows cmd: `.venv\Scripts\activate`. Linux dan macOS: `source .venv/bin/activate`.
+
+```bash
+python -m pip install --upgrade pip
+python -m pip install -e ".[dev]"
+```
+
+![Mencipta .venv](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/venv-setup.png)
+
+Tambahan `dev` memasang pytest, ruff dan mypy. Program itu sendiri tidak memerlukan apa-apa.
diff --git a/docs/wiki/Setup.md b/docs/wiki/Setup.md
new file mode 100644
index 0000000..2a2d7f8
--- /dev/null
+++ b/docs/wiki/Setup.md
@@ -0,0 +1,20 @@
+# Setup
+
+🌐 **English** · [Dansk](Setup-da) · [Bahasa Melayu](Setup-ms)
+
+You need Python 3.13 or newer.
+
+```bash
+python -m venv .venv
+```
+
+Activate the environment. Windows PowerShell: `.venv\Scripts\Activate.ps1`. Windows cmd: `.venv\Scripts\activate`. Linux and macOS: `source .venv/bin/activate`.
+
+```bash
+python -m pip install --upgrade pip
+python -m pip install -e ".[dev]"
+```
+
+![Creating the .venv](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/venv-setup.png)
+
+The `dev` extra installs pytest, ruff and mypy. Nothing is needed to run the program itself.
diff --git a/docs/wiki/Testing-da.md b/docs/wiki/Testing-da.md
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+++ b/docs/wiki/Testing-da.md
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+# Test
+
+🌐 [English](Testing) · **Dansk** · [Bahasa Melayu](Testing-ms)
+
+```bash
+python -m pytest
+```
+
+![Testkørslen](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/tests.png)
+
+Testene bruger en falsk SMTP-forbindelse og midlertidige filer. De kræver intet netværk, ingen `.env` og ingen adgangskoder. Valgfri kontrol:
+
+```bash
+python -m ruff check src tests
+python -m mypy src tests
+```
+
+API-dokumentation fra Doxygen-kommentarerne: `doxygen Doxyfile` (output i `docs/doxygen/`).
diff --git a/docs/wiki/Testing-ms.md b/docs/wiki/Testing-ms.md
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+++ b/docs/wiki/Testing-ms.md
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+# Ujian
+
+🌐 [English](Testing) · [Dansk](Testing-da) · **Bahasa Melayu**
+
+```bash
+python -m pytest
+```
+
+![Larian ujian](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/tests.png)
+
+Ujian menggunakan sambungan SMTP palsu dan fail sementara. Ia tidak memerlukan rangkaian, `.env` atau kelayakan. Semakan pilihan:
+
+```bash
+python -m ruff check src tests
+python -m mypy src tests
+```
+
+Dokumentasi API daripada komen Doxygen: `doxygen Doxyfile` (output dalam `docs/doxygen/`).
diff --git a/docs/wiki/Testing.md b/docs/wiki/Testing.md
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+++ b/docs/wiki/Testing.md
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+# Testing
+
+🌐 **English** · [Dansk](Testing-da) · [Bahasa Melayu](Testing-ms)
+
+```bash
+python -m pytest
+```
+
+![The test run](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/tests.png)
+
+The tests use a fake SMTP connection and temporary files. They need no network, no `.env` and no credentials. Optional checks:
+
+```bash
+python -m ruff check src tests
+python -m mypy src tests
+```
+
+API documentation from the Doxygen comments: `doxygen Doxyfile` (output in `docs/doxygen/`).
diff --git a/docs/wiki/Usage-da.md b/docs/wiki/Usage-da.md
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+++ b/docs/wiki/Usage-da.md
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+# Brug
+
+🌐 [English](Usage) · **Dansk** · [Bahasa Melayu](Usage-ms)
+
+Udskriv brevene i stedet for at sende dem. `--today` lader som om, det er en anden dag:
+
+```bash
+python -m birthday_wisher --dry-run --today 2000-10-17
+```
+
+![En prøvekørsel](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+Send brevene til dagens fødselsdage (kræver [afsenderindstillingerne](Configuration-da)):
+
+```bash
+python -m birthday_wisher
+```
+
+| Valgmulighed | Betydning |
+| --- | --- |
+| `--dry-run` | Udskriv e-mailene i stedet for at sende dem |
+| `--today YYYY-MM-DD` | Lad som om, det er denne dato |
+| `--csv FILE` | Brug en anden fødselsdagsfil |
+| `--letters FOLDER` | Brug en anden mappe med brevskabeloner |
+
+Slutstatus 0 betyder succes. Status 1 betyder, at opsætningen er forkert (manglende fil eller indstilling), eller at et brev ikke kunne sendes. En fødselsdag den 29. februar fejres den 28. februar i år, der ikke er skudår.
diff --git a/docs/wiki/Usage-ms.md b/docs/wiki/Usage-ms.md
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+++ b/docs/wiki/Usage-ms.md
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+# Penggunaan
+
+🌐 [English](Usage) · [Dansk](Usage-da) · **Bahasa Melayu**
+
+Cetak surat tanpa menghantarnya. `--today` berpura-pura hari ini ialah tarikh lain:
+
+```bash
+python -m birthday_wisher --dry-run --today 2000-10-17
+```
+
+![Larian percubaan](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+Hantar surat untuk hari jadi hari ini (memerlukan [tetapan penghantar](Configuration-ms)):
+
+```bash
+python -m birthday_wisher
+```
+
+| Pilihan | Maksud |
+| --- | --- |
+| `--dry-run` | Cetak e-mel tanpa menghantarnya |
+| `--today YYYY-MM-DD` | Berpura-pura hari ini ialah tarikh ini |
+| `--csv FILE` | Guna fail hari jadi lain |
+| `--letters FOLDER` | Guna folder templat surat lain |
+
+Status keluar 0 bermaksud berjaya. Status 1 bermaksud persediaan salah (fail atau tetapan tiada) atau satu surat gagal dihantar. Hari jadi pada 29 Februari disambut pada 28 Februari dalam tahun yang bukan tahun lompat.
diff --git a/docs/wiki/Usage.md b/docs/wiki/Usage.md
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+++ b/docs/wiki/Usage.md
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+# Usage
+
+🌐 **English** · [Dansk](Usage-da) · [Bahasa Melayu](Usage-ms)
+
+Print the letters instead of sending them. `--today` pretends it is another day:
+
+```bash
+python -m birthday_wisher --dry-run --today 2000-10-17
+```
+
+![A dry run](https://git.tirsystem.com/Tirsvad-Udemy-100-days-of-code/032-birthday-wisher/raw/branch/main/docs/images/dry-run.png)
+
+Send the letters for today's birthdays (needs the [sender settings](Configuration)):
+
+```bash
+python -m birthday_wisher
+```
+
+| Option | Meaning |
+| --- | --- |
+| `--dry-run` | Print the e-mails instead of sending them |
+| `--today YYYY-MM-DD` | Pretend today is this date |
+| `--csv FILE` | Use another birthdays file |
+| `--letters FOLDER` | Use another folder of letter templates |
+
+Exit status 0 means success. Status 1 means the setup is wrong (missing file or setting) or a letter could not be sent. A birthday on 29 February is celebrated on 28 February in years that are not leap years.
diff --git a/docs/wiki/_Sidebar.md b/docs/wiki/_Sidebar.md
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+++ b/docs/wiki/_Sidebar.md
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+**Birthday Wisher**
+
+- [Home](Home)
+- [Setup](Setup)
+- [Usage](Usage)
+- [Configuration](Configuration)
+- [Testing](Testing)
+- [Architecture](Architecture)
+
+**Languages**
+
+- English: [Home](Home)
+- Dansk: [Home](Home-da)
+- Bahasa Melayu: [Home](Home-ms)