Eradicate hook files, use pinned beads only (gt-rgd9x)

- Remove hook functions from internal/wisp/io.go (WriteSlungWork, ReadHook, BurnHook, etc.)
- Remove hook types from internal/wisp/types.go (SlungWork, Wisp, etc.)
- Update up.go to query pinned beads instead of reading hook files
- Remove SlungWork field from molecule_status.go
- Remove hook-*.json pattern from .beads/.gitignore
- Delete live hook file /Users/stevey/gt/deacon/.beads/hook-deacon.json

Work is now tracked exclusively via pinned beads (status=pinned, assignee=agent).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/wisp/io.go

@@ -2,19 +2,11 @@ package wisp
 
 import (
 	"encoding/json"
-	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
 )
 
-// Common errors.
-var (
-	ErrNoWispDir   = errors.New("beads directory does not exist")
-	ErrNoHook      = errors.New("no hook file found")
-	ErrInvalidWisp = errors.New("invalid hook file format")
-)
-
 // EnsureDir ensures the .beads directory exists in the given root.
 func EnsureDir(root string) (string, error) {
 	dir := filepath.Join(root, WispDir)
@@ -29,98 +21,6 @@ func WispPath(root, filename string) string {
 	return filepath.Join(root, WispDir, filename)
 }
 
-// HookPath returns the full path to an agent's hook file.
-func HookPath(root, agent string) string {
-	return WispPath(root, HookFilename(agent))
-}
-
-// WriteSlungWork writes a slung work hook to the agent's hook file.
-//
-// Deprecated: Hook files are deprecated. Use bd update --status=pinned instead.
-// Work is now tracked via pinned beads (discoverable via query) rather than
-// explicit hook files. This function is kept for backward compatibility.
-func WriteSlungWork(root, agent string, sw *SlungWork) error {
-	dir, err := EnsureDir(root)
-	if err != nil {
-		return err
-	}
-
-	path := filepath.Join(dir, HookFilename(agent))
-	return writeJSON(path, sw)
-}
-
-// ReadHook reads the slung work from an agent's hook file.
-// Returns ErrNoHook if no hook file exists.
-//
-// Deprecated: Hook files are deprecated. Query pinned beads instead.
-// Use beads.List with Status=pinned and Assignee=agent.
-func ReadHook(root, agent string) (*SlungWork, error) {
-	path := HookPath(root, agent)
-
-	data, err := os.ReadFile(path)
-	if os.IsNotExist(err) {
-		return nil, ErrNoHook
-	}
-	if err != nil {
-		return nil, fmt.Errorf("read hook: %w", err)
-	}
-
-	var sw SlungWork
-	if err := json.Unmarshal(data, &sw); err != nil {
-		return nil, fmt.Errorf("%w: %v", ErrInvalidWisp, err)
-	}
-
-	if sw.Type != TypeSlungWork {
-		return nil, fmt.Errorf("%w: expected slung-work, got %s", ErrInvalidWisp, sw.Type)
-	}
-
-	return &sw, nil
-}
-
-// BurnHook removes an agent's hook file after it has been picked up.
-//
-// Deprecated: Hook files are deprecated. Work is tracked via pinned beads
-// which don't need burning - just unpin with bd update --status=open.
-func BurnHook(root, agent string) error {
-	path := HookPath(root, agent)
-	err := os.Remove(path)
-	if os.IsNotExist(err) {
-		return nil // already burned
-	}
-	return err
-}
-
-// HasHook checks if an agent has a hook file.
-//
-// Deprecated: Hook files are deprecated. Query pinned beads instead.
-func HasHook(root, agent string) bool {
-	path := HookPath(root, agent)
-	_, err := os.Stat(path)
-	return err == nil
-}
-
-// ListHooks returns a list of agents with active hooks.
-//
-// Deprecated: Hook files are deprecated. Query pinned beads instead.
-func ListHooks(root string) ([]string, error) {
-	dir := filepath.Join(root, WispDir)
-	entries, err := os.ReadDir(dir)
-	if os.IsNotExist(err) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, err
-	}
-
-	var agents []string
-	for _, e := range entries {
-		if agent := AgentFromHookFilename(e.Name()); agent != "" {
-			agents = append(agents, agent)
-		}
-	}
-	return agents, nil
-}
-
 // writeJSON is a helper to write JSON files atomically.
 func writeJSON(path string, v interface{}) error {
 	data, err := json.MarshalIndent(v, "", "  ")