polish: hook and setup claude/codex messaging

- hook core rules: collapse to 4, lead with "use felt for everything"
- hook CLI: promote -d to its own line, pull upstream/downstream out of Also
- setup claude/codex: softer framing for CLAUDE.md/AGENTS.md snippet
- snippet: drop poetic opener, tighten to lead with DAG value prop

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: cailmdaley

cmd/hook.go

@@ -64,11 +64,10 @@ func minimalOutput() string {
 *No felt repository in current directory.*
 
 ` + cliReference() + `## Core Rules
-- Track **work** that spans sessions, has dependencies, or emerges during work
-- Track **decisions** — what was decided, why, and how decisions depend on each other
-- Outcome (` + "`-o`" + `) is the documentation: capture the conclusion, the reasoning, what was learned
-- **Leave a wake** — file as you go; the DAG forms after your path
-- **Titles are DAG node labels: 2-3 words.** The body and outcome carry full content.
+- **Use felt for everything** — tasks, decisions, questions, detours, bugs you can't chase now. If it might matter, it's a fiber.
+- Outcome (` + "`-o`" + `) is the documentation: the conclusion, the reasoning, what was learned
+- **Leave a wake** — file as you go
+- **Titles are DAG node labels: 2-3 words.** Body and outcome carry full content.
 `
 }
 
@@ -148,11 +147,10 @@ func formatSessionOutput(felts []*felt.Felt, g *felt.Graph) string {
 
 	// Core rules
 	sb.WriteString("## Core Rules\n")
-	sb.WriteString("- Track **work** that spans sessions, has dependencies, or emerges during work\n")
-	sb.WriteString("- Track **decisions** — what was decided, why, and how decisions depend on each other\n")
-	sb.WriteString("- Outcome (`-o`) is the documentation: capture the conclusion, the reasoning, what was learned\n")
-	sb.WriteString("- **Leave a wake** — file as you go; the DAG forms after your path\n")
-	sb.WriteString("- **Titles are DAG node labels: 2-3 words.** The body and outcome carry full content.\n")
+	sb.WriteString("- **Use felt for everything** — tasks, decisions, questions, detours, bugs you can't chase now. If it might matter, it's a fiber.\n")
+	sb.WriteString("- Outcome (`-o`) is the documentation: the conclusion, the reasoning, what was learned\n")
+	sb.WriteString("- **Leave a wake** — file as you go\n")
+	sb.WriteString("- **Titles are DAG node labels: 2-3 words.** Body and outcome carry full content.\n")
 
 	return sb.String()
 }
@@ -216,11 +214,13 @@ felt add "title" -s open -t tag -a <dep-id> -o "outcome"
 felt edit <id> -s active        # enter tracking / mark active
 felt edit <id> -s closed -o "outcome"  # close with outcome
 felt comment <id> "note"        # add comment
-felt show <id>                  # full details (-d: title, compact, summary)
+felt show <id>                  # full details
 felt ls                         # tracked fibers (open/active)
 felt ls -t tapestry:            # any filter widens to all statuses
 felt ls -s closed "query"       # explicit -s overrides; -e exact, -r regex
-Also: link, unlink, tag, untag, upstream, downstream, tree, ready, rm
+felt upstream/downstream <id>   # DAG traversal
+-d title|compact|summary|full   # depth for show, ls, upstream, downstream
+Also: link, unlink, tag, untag, tree, ready, rm
 ` + "```" + `
 Statuses: · untracked, ○ open, ◐ active, ● closed
 To patch body text (not replace), edit .felt/<id>.md directly.

cmd/setup.go

@@ -34,7 +34,7 @@ Use --uninstall to remove the hooks.`,
 			return err
 		}
 		fmt.Println()
-		fmt.Println("Add this to your CLAUDE.md:")
+		fmt.Println("You may want to put something like the following in your CLAUDE.md, adjusted to match your work style:")
 		fmt.Println()
 		fmt.Println(claudeMDSnippet())
 		return nil
@@ -59,7 +59,7 @@ Use --uninstall to remove it.`,
 			return err
 		}
 		fmt.Println()
-		fmt.Println("Add this to your AGENTS.md:")
+		fmt.Println("You may want to put something like the following in your AGENTS.md, adjusted to match your work style:")
 		fmt.Println()
 		fmt.Println(claudeMDSnippet())
 		return nil
@@ -78,9 +78,9 @@ func init() {
 func claudeMDSnippet() string {
 	fence := "```"
 	return "## felt\n\n" +
-		"felt is the textile of work. Fibers are concerns — tasks, decisions, questions, specs — strung together in a DAG.\n\n" +
-		"**Fibers are documentation.** Don't write notes or plans; use fibers. Body is the content; outcome is the conclusion. " +
-		"The DAG explains itself: `felt upstream` shows what a decision rests on, `felt downstream` shows what breaks if it changes. " +
+		"Fibers are concerns — tasks, decisions, questions — strung in a DAG. " +
+		"Body is the content; outcome is the conclusion. " +
+		"`felt upstream` shows what a decision rests on; `felt downstream` shows what breaks if it changes. " +
 		"A missing causal link costs an investigation; a fiber costs nothing.\n\n" +
 		"**Rhythm.** File before you start, comment as you go, close with an outcome.\n" +
 		fence + "bash\n" +