refactor: remove duplicate functions from kugetsu, use kugetsu-index.sh exclusively

- Remove duplicate write_index, get_base_session_id, get_pm_agent_session_id,
  get_session_for_issue, set_base_in_index, set_pm_agent_in_index,
  add_issue_to_index, remove_issue_from_index from kugetsu
- These functions are already defined in kugetsu-index.sh which is sourced earlier
- The kugetsu versions were shadowing the kugetsu-index.sh ones unnecessarily
- This removes code duplication and ensures consistent behavior

skills/kugetsu/scripts/kugetsu

@@ -475,97 +475,6 @@ read_index() {
     fi
 }
 
-write_index() {
-    local base="$1"
-    local pm_agent="$2"
-    local issues_json="$3"
-    local temp_file="$INDEX_FILE.tmp.$$"
-    printf '{"base": %s, "pm_agent": %s, "issues": %s}\n' "$base" "$pm_agent" "$issues_json" > "$temp_file"
-    mv "$temp_file" "$INDEX_FILE"
-}
-
-get_base_session_id() {
-    local index=$(read_index)
-    echo "$index" | python3 -c "import sys, json; d=json.load(sys.stdin); print(d.get('base') or '')"
-}
-
-get_pm_agent_session_id() {
-    local index=$(read_index)
-    echo "$index" | python3 -c "import sys, json; d=json.load(sys.stdin); print(d.get('pm_agent') or '')"
-}
-
-get_session_for_issue() {
-    local issue_ref="$1"
-    local index=$(read_index)
-    echo "$index" | python3 -c "import sys, json; d=json.load(sys.stdin); print(d['issues'].get('$issue_ref') or '')"
-}
-
-set_base_in_index() {
-    local base_session_id="$1"
-    local pm_agent=$(get_pm_agent_session_id)
-    local issues_json=$(read_index | python3 -c "import sys, json; d=json.load(sys.stdin); print(json.dumps(d['issues']))")
-    if [ -z "$pm_agent" ] || [ "$pm_agent" = "null" ]; then
-        write_index "\"$base_session_id\"" "null" "$issues_json"
-    else
-        write_index "\"$base_session_id\"" "\"$pm_agent\"" "$issues_json"
-    fi
-}
-
-set_pm_agent_in_index() {
-    local pm_agent_session_id="$1"
-    local base=$(get_base_session_id)
-    local issues_json=$(read_index | python3 -c "import sys, json; d=json.load(sys.stdin); print(json.dumps(d['issues']))")
-    if [ -z "$base" ] || [ "$base" = "null" ]; then
-        write_index "null" "\"$pm_agent_session_id\"" "$issues_json"
-    else
-        write_index "\"$base\"" "\"$pm_agent_session_id\"" "$issues_json"
-    fi
-}
-
-add_issue_to_index() {
-    local issue_ref="$1"
-    local session_file="$2"
-    local index=$(read_index)
-    local base=$(get_base_session_id)
-    local pm_agent=$(get_pm_agent_session_id)
-    local issues=$(echo "$index" | python3 -c "import sys, json; d=json.load(sys.stdin); print(json.dumps(d['issues']))")
-    local new_issues=$(echo "$issues" | python3 -c "import sys, json; d=json.load(sys.stdin); d['$issue_ref']='$session_file'; print(json.dumps(d))")
-    if [ -z "$base" ] || [ "$base" = "null" ]; then
-        if [ -z "$pm_agent" ] || [ "$pm_agent" = "null" ]; then
-            write_index "null" "null" "$new_issues"
-        else
-            write_index "null" "\"$pm_agent\"" "$new_issues"
-        fi
-    else
-        if [ -z "$pm_agent" ] || [ "$pm_agent" = "null" ]; then
-            write_index "\"$base\"" "null" "$new_issues"
-        else
-            write_index "\"$base\"" "\"$pm_agent\"" "$new_issues"
-        fi
-    fi
-}
-
-remove_issue_from_index() {
-    local issue_ref="$1"
-    local index=$(read_index)
-    local base=$(get_base_session_id)
-    local pm_agent=$(get_pm_agent_session_id)
-    local new_issues=$(echo "$index" | python3 -c "import sys, json; d=json.load(sys.stdin); d['issues'].pop('$issue_ref', None); print(json.dumps(d['issues']))")
-    if [ -z "$base" ] || [ "$base" = "null" ]; then
-        if [ -z "$pm_agent" ] || [ "$pm_agent" = "null" ]; then
-            write_index "null" "null" "$new_issues"
-        else
-            write_index "null" "\"$pm_agent\"" "$new_issues"
-        fi
-    else
-        if [ -z "$pm_agent" ] || [ "$pm_agent" = "null" ]; then
-            write_index "\"$base\"" "null" "$new_issues"
-        else
-            write_index "\"$base\"" "\"$pm_agent\"" "$new_issues"
-        fi
-    fi
-}
-
 validate_issue_ref() {
     local issue_ref="$1"
     if [[ ! "$issue_ref" =~ ^[^/]+/[^/]+/[^#]+#[0-9]+$ ]]; then

skills/kugetsu/scripts/kugetsu-index.sh

@@ -15,6 +15,13 @@ write_index() {
     local issues_json="$3"
     local temp_file="$INDEX_FILE.tmp.$$"
     printf '{"base": %s, "pm_agent": %s, "issues": %s}\n' "$base" "$pm_agent" "$issues_json" > "$temp_file"
+    
+    if ! python3 -c "import json; json.load(open('$temp_file'))" 2>/dev/null; then
+        echo "Error: write_index would create malformed JSON, aborting. base=$base, pm_agent=$pm_agent, issues_json=$issues_json" >&2
+        rm -f "$temp_file"
+        return 1
+    fi
+    
     mv "$temp_file" "$INDEX_FILE"
 }