diff --git a/intent.md b/intent.md
index b5017e9..936a1be 100644
--- a/intent.md
+++ b/intent.md
@@ -1,19 +1,117 @@
 # Intent
 
 ## Goal
-TODO: describe the outcome and the user who needs it.
+Let a support coordinator preview the tickets in a CSV file before any import is
+approved. A future implementation will add one function that takes CSV text and
+returns either the parsed tickets, in input order, or a single error code. It never
+changes or stores any data. Success looks like
+`{"tickets":[{"title":"...","priority":"normal"}]}` and failure looks like
+`{"error":"error-code"}`. There is no partial success: if any row is invalid, the
+whole preview fails with one error.
 
 ## Scope
-TODO: identify the allowed changes and the work deliberately excluded.
+In scope: a pure preview function in `src/import-tickets.mjs` and its tests in
+`tests/import-tickets.test.mjs`. Nothing else should change. The function handles:
+- A header row that must contain `title` and may contain `priority`, in either order.
+- Trimming surrounding whitespace from every value.
+- Priorities `low`, `normal` and `urgent`, with a missing or blank priority becoming
+  `normal`.
+- Standard CSV quoting, so a quoted title may contain a comma.
+- At most 100 data rows.
+
+Out of scope: any UI, database, network calls, file reads or writes, new package
+dependencies, and actually importing or saving tickets. If the work seems to need
+any of these, or a file outside the two allowed paths, stop and ask first.
 
 ## Constraints
-TODO: state the project and data constraints the implementation must preserve.
+- Do not modify `src/tickets.mjs`, its existing tests, anything under `.github/`, or
+  `CLAUDE.md`. `src/tickets.mjs` is the stable ticket representation; reuse it rather
+  than redefining what a ticket is.
+- No side effects: the function only reads its input string and returns a value.
+- Use only Node.js 22 built-ins; add no dependencies to `package.json`.
+- Errors are returned as `{"error": code}`, never thrown to the caller. The only codes
+  are `unknown-column`, `empty-title`, `invalid-priority` and `row-limit`.
+- `unknown-column` covers: an empty CSV with no header, a missing `title` column, any
+  column other than `title` or `priority`, duplicate column names, and malformed rows
+  (wrong number of fields or broken quoting).
+- Count data rows before validating any values. More than 100 rows returns `row-limit`
+  even if the rows also contain bad values.
 
 ## Plan
-TODO: give Claude a short, ordered implementation plan.
+Ask before starting. Confirm with the student that this intent is approved before
+writing any code, and ask again before expanding scope or touching any other file.
+Once approved:
+1. Write `tests/import-tickets.test.mjs` first, with one test per acceptance case
+   below plus the edge cases listed in Constraints.
+2. Add a small CSV parser in `src/import-tickets.mjs` that handles quoted fields,
+   escaped quotes (`""`) and a trailing newline.
+3. Validate the header, then check the row limit, then validate each row and build
+   tickets in input order. Return the first error found and no tickets.
+4. Run the verification commands, then show the diff and wait for review. Do not
+   commit, push or open a PR unless asked.
 
 ## Acceptance
-TODO: specify useful positive and negative examples; add the JSON contract described in the brief.
+The work is done when every case below returns exactly its expected result. Together
+the cases cover a valid explicit priority, a default priority, a quoted title with a
+comma, an empty title, an unknown column, an invalid priority and too many rows. The
+`repeat: 101` case means the one data row is repeated 101 times. The contract also
+records the allowed and protected paths, the non-goals and the approval rule.
+
+```json
+{
+  "schema": 1,
+  "change": "ticket-csv-preview",
+  "allowed_changes": ["src/import-tickets.mjs", "tests/import-tickets.test.mjs"],
+  "protected_paths": ["src/tickets.mjs", ".github/", "CLAUDE.md"],
+  "non_goals": ["ui", "database", "network"],
+  "requirements": {
+    "columns": ["title", "priority"],
+    "default_priority": "normal",
+    "valid_priorities": ["low", "normal", "urgent"],
+    "reject_unknown_columns": true,
+    "reject_empty_title": true,
+    "max_rows": 100,
+    "side_effects": "preview-only"
+  },
+  "verification": ["npm test", "git diff --check"],
+  "approval": "ask-before-implementation",
+  "acceptance_cases": [
+    {
+      "csv": "title,priority\nPrinter issue,urgent\n",
+      "expected": {"tickets":[{"title":"Printer issue","priority":"urgent"}]}
+    },
+    {
+      "csv": "title,priority\nReset password,\n",
+      "expected": {"tickets":[{"title":"Reset password","priority":"normal"}]}
+    },
+    {
+      "csv": "title,priority\n\"Printer jam, second floor\",low\n",
+      "expected": {"tickets":[{"title":"Printer jam, second floor","priority":"low"}]}
+    },
+    {
+      "csv": "title,priority\n   ,urgent\n",
+      "expected": {"error":"empty-title"}
+    },
+    {
+      "csv": "title,owner\nPrinter issue,alex\n",
+      "expected": {"error":"unknown-column"}
+    },
+    {
+      "csv": "title,priority\nPrinter issue,high\n",
+      "expected": {"error":"invalid-priority"}
+    },
+    {
+      "csv": "title,priority\nPrinter issue,urgent\n",
+      "repeat": 101,
+      "expected": {"error":"row-limit"}
+    }
+  ]
+}
+```
 
 ## Verification
-TODO: explain how to verify the result and when to ask the user for approval.
+Run `npm test`. Every existing test and every new import-tickets test must pass.
+Run `git diff --check` to confirm there are no whitespace errors. Then run
+`git diff --stat` and confirm that only `src/import-tickets.mjs` and
+`tests/import-tickets.test.mjs` changed. Report the results, including any failure
+output, instead of claiming success.