docs: post-move housekeeping (spec 009)

README.md

@@ -1,18 +1,27 @@
-# Hello World 🌍
+# catalog-algorithms
 
-> "Hello World" in every programming language we can get our hands on.
+> Classic algorithm implementations across programming languages, measured by the
+> [BenchCommons](https://github.com/BenchCommons) toolset. It starts with Hello World in 452 languages.
 
-[![CI](https://github.com/matbrgz/Hello-World/actions/workflows/hello-world.yml/badge.svg)](https://github.com/matbrgz/Hello-World/actions/workflows/hello-world.yml)
+[![CI](https://github.com/BenchCommons/catalog-algorithms/actions/workflows/hello-world.yml/badge.svg)](https://github.com/BenchCommons/catalog-algorithms/actions/workflows/hello-world.yml)
 ![Languages](https://img.shields.io/badge/languages-452-blue)
 ![Tested in CI](https://img.shields.io/badge/tested%20in%20CI-377%20(83%25)-brightgreen)
 ![TIOBE coverage](https://img.shields.io/badge/TIOBE%20top%20100-100%25-brightgreen)
 ![License](https://img.shields.io/badge/license-MIT-green)
 
-Since 1974, when Brian Kernighan used it in *Programming in C: A Tutorial*, printing **Hello World** has been
-the first program almost everyone writes in a new language. This repository collects that program in
-**452 languages**: every language in the [TIOBE Index](https://www.tiobe.com/tiobe-index/) top 100,
-the languages that shaped computing history, the new languages people are talking about, Brazilian languages,
-and a long tail of assembly, shell, scientific, hardware, markup and esoteric languages.
+This repository is the BenchCommons catalog of **classic algorithm implementations across languages**:
+n-body, fannkuch-redux, spectral-norm, binary-trees, mandelbrot, sorting, searching, hashing and others.
+Every implementation uses a pinned toolchain and has its output checked against a canonical expected output
+before it is measured for time, memory and energy with [perfratio](https://github.com/BenchCommons/perfratio)
+through [benchmark-tool](https://github.com/BenchCommons/benchmark-tool). The roadmap is tracked in
+[issue #11](https://github.com/BenchCommons/catalog-algorithms/issues/11) and in [`docs/specs/`](docs/specs/ROADMAP.md).
+
+It starts from **Hello World**, the first program almost everyone writes in a new language since Brian Kernighan
+used it in 1974. Hello World does almost no work, so it is the **startup-cost baseline** for each language:
+the time and memory a toolchain needs before any algorithm runs. The catalog has it in **452 languages**:
+every language in the [TIOBE Index](https://www.tiobe.com/tiobe-index/) top 100, the languages that shaped
+computing history, the new languages people are talking about, Brazilian languages, and a long tail of assembly,
+shell, scientific, hardware, markup and esoteric languages.
 
 **377 of 452 programs (83%) are checked on every push** by GitHub Actions on Linux, macOS and Windows:
 
@@ -654,7 +663,7 @@ Maintained by [@matbrgz](https://github.com/matbrgz).
 
 [![matbrgz](https://github.com/matbrgz.png?size=64)](https://github.com/matbrgz)
 
-[![Contributors](https://contrib.rocks/image?repo=matbrgz/Hello-World)](https://github.com/matbrgz/Hello-World/graphs/contributors)
+[![Contributors](https://contrib.rocks/image?repo=BenchCommons/catalog-algorithms)](https://github.com/BenchCommons/catalog-algorithms/graphs/contributors)
 
 ## License
 

docs/specs/009-post-move/plan.md

@@ -0,0 +1,6 @@
+# Plano — 009
+
+- `scripts/hello.py`: trocar a constante `REPO`; o selo de CI e o bloco de contribuidores já usam `REPO`.
+- `render_readme`: novo título (`# catalog-algorithms`), citação e primeiro parágrafo sobre o catálogo; segundo parágrafo sobre o Hello World como linha de base de inicialização, mantendo a contagem de linguagens e testes calculada dos metadados.
+- Regenerar com `python3 scripts/hello.py readme` e validar com `python3 scripts/hello.py check`.
+- A seção de contribuidores continua citando @matbrgz como mantenedor (spec 002).

docs/specs/009-post-move/spec.md

@@ -0,0 +1,23 @@
+# 009 — Arrumação pós-mudança
+
+Issue: #11.
+
+## O quê
+O repositório saiu de `matbrgz/Hello-World` para `BenchCommons/catalog-algorithms` e passa a ser o catálogo de implementações de algoritmos clássicos em várias linguagens. Atualizar as referências ao endereço antigo e a apresentação do README para o novo propósito, mantendo o README gerado.
+
+## Requisitos
+1. `REPO` em `scripts/hello.py` passa a ser `BenchCommons/catalog-algorithms`; selo de CI, contribuidores e links do README derivam dele.
+2. Nenhuma referência a `matbrgz/Hello-World` fora de `languages/` e do histórico de specs concluídas.
+3. A introdução do README, gerada por `scripts/hello.py readme`, descreve o catálogo de algoritmos clássicos (medidos com perfratio via benchmark-tool) e apresenta o Hello World como a linha de base de custo de inicialização de cada linguagem.
+4. A introdução aponta para a issue #11 e para `docs/specs/ROADMAP.md`.
+5. O README continua sem edição manual: toda mudança passa pelo gerador.
+
+## Critérios de aceite
+- `python3 scripts/hello.py check` passa com 0 erros.
+- `grep -rn "matbrgz/Hello-World" --exclude-dir=languages --exclude-dir=docs .` não encontra nada.
+- O selo de CI do README aponta para `BenchCommons/catalog-algorithms`.
+
+## Fora de escopo
+- Renomear o workflow `hello-world.yml` ou o script `scripts/hello.py` (a nova estrutura vem na spec 011).
+- Conjunto de algoritmos e E/S canônica (spec 010).
+- O PR #10 (retentativas no CI), já integrado a `master` antes desta spec.

docs/specs/009-post-move/tasks.md

@@ -0,0 +1,7 @@
+# Tarefas — 009
+
+- [x] `REPO = "BenchCommons/catalog-algorithms"` em `scripts/hello.py`.
+- [x] Introdução do README no gerador: catálogo de algoritmos e Hello World como linha de base de inicialização.
+- [x] Regenerar o README e rodar `check` (0 erros).
+- [x] Conferir que não restam referências a `matbrgz/Hello-World` fora de `languages/` e `docs/`.
+- [x] Spec 009 no `ROADMAP.md`.

docs/specs/ROADMAP.md

@@ -10,3 +10,4 @@
 | [006 — Ampliar a cobertura de testes](006-more-tests/spec.md) | concluída | 004 |
 | [007 — Cobertura de 80%](007-coverage-80/spec.md) | concluída | 006 |
 | [008 — CI seletivo nos PRs](008-selective-ci/spec.md) | concluída | 004 |
+| [009 — Arrumação pós-mudança](009-post-move/spec.md) | concluída | 003 |

scripts/hello.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""Hello World library tooling.
+"""catalog-algorithms tooling (Hello World library).
 
 Usage:
   python3 scripts/hello.py readme                 # regenerate README.md
@@ -21,7 +21,7 @@
 ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 LANG_DIR = os.path.join(ROOT, "languages")
 README = os.path.join(ROOT, "README.md")
-REPO = "matbrgz/Hello-World"
+REPO = "BenchCommons/catalog-algorithms"
 TIOBE_MONTH = "September 2026"
 TEST_GROUPS = ("base", "apt", "extra", "docker", "macos", "windows")
 
@@ -103,21 +103,30 @@ def render_readme(langs):
     brazilian = sorted((l for l in langs if "brazilian" in l.get("tags", [])), key=name_key)
 
     parts = []
-    parts.append("""# Hello World 🌍
+    parts.append("""# catalog-algorithms
 
-> "Hello World" in every programming language we can get our hands on.
+> Classic algorithm implementations across programming languages, measured by the
+> [BenchCommons](https://github.com/BenchCommons) toolset. It starts with Hello World in {count} languages.
 
 [![CI](https://github.com/{repo}/actions/workflows/hello-world.yml/badge.svg)](https://github.com/{repo}/actions/workflows/hello-world.yml)
 ![Languages](https://img.shields.io/badge/languages-{count}-blue)
 ![Tested in CI](https://img.shields.io/badge/tested%20in%20CI-{tested}%20({pct}%25)-brightgreen)
 ![TIOBE coverage](https://img.shields.io/badge/TIOBE%20top%20100-100%25-brightgreen)
 ![License](https://img.shields.io/badge/license-MIT-green)
 
-Since 1974, when Brian Kernighan used it in *Programming in C: A Tutorial*, printing **Hello World** has been
-the first program almost everyone writes in a new language. This repository collects that program in
-**{count} languages**: every language in the [TIOBE Index](https://www.tiobe.com/tiobe-index/) top 100,
-the languages that shaped computing history, the new languages people are talking about, Brazilian languages,
-and a long tail of assembly, shell, scientific, hardware, markup and esoteric languages.
+This repository is the BenchCommons catalog of **classic algorithm implementations across languages**:
+n-body, fannkuch-redux, spectral-norm, binary-trees, mandelbrot, sorting, searching, hashing and others.
+Every implementation uses a pinned toolchain and has its output checked against a canonical expected output
+before it is measured for time, memory and energy with [perfratio](https://github.com/BenchCommons/perfratio)
+through [benchmark-tool](https://github.com/BenchCommons/benchmark-tool). The roadmap is tracked in
+[issue #11](https://github.com/{repo}/issues/11) and in [`docs/specs/`](docs/specs/ROADMAP.md).
+
+It starts from **Hello World**, the first program almost everyone writes in a new language since Brian Kernighan
+used it in 1974. Hello World does almost no work, so it is the **startup-cost baseline** for each language:
+the time and memory a toolchain needs before any algorithm runs. The catalog has it in **{count} languages**:
+every language in the [TIOBE Index](https://www.tiobe.com/tiobe-index/) top 100, the languages that shaped
+computing history, the new languages people are talking about, Brazilian languages, and a long tail of assembly,
+shell, scientific, hardware, markup and esoteric languages.
 
 **{tested} of {count} programs ({pct}%) are checked on every push** by GitHub Actions on Linux, macOS and Windows: