feat(02-02): record manifest route cases and report coverage

Drive ordered route cases through RecordFlow, resume in batches of
15, and print recorded/passing/failing/unrecorded coverage.

Co-authored-by: Cursor <cursoragent@cursor.com>

tide/report.go

@@ -0,0 +1,53 @@
+package tide
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// Coverage is the recorded/passing/failing/unrecorded table over manifest routes.
+type Coverage struct {
+	Total           int
+	Recorded        int
+	Passing         int
+	Failing         int
+	Unrecorded      int
+	Pending         int
+	Ported          int
+	ResumeRemaining int
+	Rows            []CoverageRow
+	Diffs           []string
+}
+
+// CoverageRow is one manifest route's outcome.
+type CoverageRow struct {
+	ID      string
+	Status  string
+	Outcome string
+}
+
+// CoverageHeaders is the table header for CLI output.
+func CoverageHeaders() []string {
+	return []string{"route", "status", "outcome"}
+}
+
+// CoverageRows renders the coverage table.
+func (c Coverage) CoverageRows() [][]string {
+	rows := make([][]string, 0, len(c.Rows))
+	for _, r := range c.Rows {
+		rows = append(rows, []string{r.ID, r.Status, r.Outcome})
+	}
+	return rows
+}
+
+// SummaryLine is a one-line recorded/passing/failing/unrecorded report.
+func (c Coverage) SummaryLine() string {
+	return fmt.Sprintf("recorded %d/%d passing %d failing %d unrecorded %d", c.Recorded, c.Total, c.Passing, c.Failing, c.Unrecorded)
+}
+
+func (c Coverage) ResumeLine() string {
+	if c.ResumeRemaining <= 0 {
+		return "manifest recording complete"
+	}
+	return "resume remaining " + strconv.Itoa(c.ResumeRemaining)
+}