seed: curriculum content

1.solar-system/1.welcome/07.the-editor/index.md

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+---
+type: challenge
+title: "The Editor"
+xp: 50
+duration: 25
+difficulty: 2
+---
+
+# The Editor
+
+> **[INCOMING — Mission Control, Earth]**
+>
+> Cadet, single-line `echo` works for short messages. Real files
+> need multiple lines. Two options:
+>
+> - Multiple `echo` lines, each with its own redirect (use `>>` after
+>   the first one to append)
+> - A *heredoc* — write a whole block in one go:
+>
+>   ```bash
+>   cat > journal.md <<EOF
+>   line one
+>   line two
+>   EOF
+>   ```
+>
+> Write a script that creates `journal.md` containing exactly:
+>
+> ```
+> # Cadet Log — Day 1
+>
+> Today I learned to navigate the shell.
+> Tomorrow I will write code.
+> ```
+>
+> Mind the empty line between the header and the body.
+>
+> [END TRANSMISSION]
+
+## Your Task
+
+In `starter/starter.sh`, produce `journal.md` with the exact content
+above.
+
+## Objectives
+
+- `journal.md` exists
+- Contents match the template exactly (4 lines + the blank line)