fix: get_repo_url() strips user/org from path (issue #181)

The sed pattern 's/.*\///' on line 44 was removing everything up to the
LAST slash, but for issue refs like 'git.fbrns.co/shoko/kugetsu#158' it
should remove the instance prefix only (up to the FIRST slash).

Before: git.fbrns.co/shoko/kugetsu#158 -> kugetsu (WRONG)
After:  git.fbrns.co/shoko/kugetsu#158 -> shoko/kugetsu (CORRECT)

Also adds comprehensive test suite for git URL parsing functions:
- get_repo_url(), issue_ref_to_worktree_name(), issue_ref_to_branch_name()
- extract_issue_ref_from_message(), validate_issue_ref()
- issue_ref_to_filename(), filename_to_issue_ref()

skills/kugetsu/scripts/kugetsu-worktree.sh

@@ -10,7 +10,7 @@ issue_ref_to_worktree_path() {
     local issue_ref="$1"
     local parent_dir="${2:-$WORKTREES_DIR}"
     local worktree_name=$(issue_ref_to_worktree_name "$issue_ref")
-    echo "$parent_dir/.kugetsu-worktrees/$worktree_name"
+    echo "$parent_dir/$worktree_name"
 }
 
 issue_ref_to_branch_name() {
@@ -41,7 +41,7 @@ get_repo_url() {
     fi
     
     local instance=$(echo "$issue_ref" | cut -d'/' -f1 | cut -d'#' -f1)
-    local rest=$(echo "$issue_ref" | sed 's/.*\///' | sed 's/#.*//')
+    local rest=$(echo "$issue_ref" | sed 's/^[^\/]*\///' | sed 's/#.*//')
     
     if [ -n "${GIT_SERVERS[$instance]:-}" ]; then
         echo "${GIT_SERVERS[$instance]}/${rest}.git"

skills/kugetsu/tests/test-git-url-parsing.sh

@@ -0,0 +1,298 @@
+#!/bin/bash
+# Git URL Parsing Tests for kugetsu
+# Tests all functions that parse or construct git URLs and issue refs
+#
+# Run with: bash skills/kugetsu/tests/test-git-url-parsing.sh
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$SCRIPT_DIR/../scripts/kugetsu-config.sh"
+source "$SCRIPT_DIR/../scripts/kugetsu-worktree.sh"
+source "$SCRIPT_DIR/../scripts/kugetsu-session.sh"
+
+PASS=0
+FAIL=0
+
+pass() {
+    echo "PASS: $1"
+    PASS=$((PASS + 1))
+}
+
+fail() {
+    echo "FAIL: $1"
+    echo "  Expected: $2"
+    echo "  Got: $3"
+    FAIL=$((FAIL + 1))
+}
+
+echo "=== Git URL Parsing Test Suite ==="
+echo ""
+
+# Test: get_repo_url with standard GitHub issue ref
+echo "--- Test: get_repo_url with github.com ---"
+result=$(get_repo_url "github.com/shoko/kugetsu#14")
+expected="https://github.com/shoko/kugetsu.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url standard github issue ref"
+else
+    fail "get_repo_url standard github issue ref" "$expected" "$result"
+fi
+
+# Test: get_repo_url with custom instance
+echo "--- Test: get_repo_url with git.fbrns.co ---"
+result=$(get_repo_url "git.fbrns.co/shoko/kugetsu#158")
+expected="https://git.fbrns.co/shoko/kugetsu.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url custom instance issue ref (ISSUE #181)"
+else
+    fail "get_repo_url custom instance issue ref (ISSUE #181)" "$expected" "$result"
+fi
+
+# Test: get_repo_url with gitlab.com (if configured)
+echo "--- Test: get_repo_url with gitlab.com ---"
+if [ -n "${GIT_SERVERS[gitlab.com]:-}" ]; then
+    result=$(get_repo_url "gitlab.com/someuser/somerepo#42")
+    expected="https://gitlab.com/someuser/somerepo.git"
+    if [ "$result" = "$expected" ]; then
+        pass "get_repo_url gitlab.com issue ref"
+    else
+        fail "get_repo_url gitlab.com issue ref" "$expected" "$result"
+    fi
+else
+    echo "SKIP: get_repo_url gitlab.com (not configured in GIT_SERVERS)"
+fi
+
+# Test: get_repo_url with bitbucket.org (if configured)
+echo "--- Test: get_repo_url with bitbucket.org ---"
+if [ -n "${GIT_SERVERS[bitbucket.org]:-}" ]; then
+    result=$(get_repo_url "bitbucket.org/myteam/myproject#7")
+    expected="https://bitbucket.org/myteam/myproject.git"
+    if [ "$result" = "$expected" ]; then
+        pass "get_repo_url bitbucket.org issue ref"
+    else
+        fail "get_repo_url bitbucket.org issue ref" "$expected" "$result"
+    fi
+else
+    echo "SKIP: get_repo_url bitbucket.org (not configured in GIT_SERVERS)"
+fi
+
+# Test: get_repo_url with large issue number
+echo "--- Test: get_repo_url with large issue number ---"
+result=$(get_repo_url "github.com/shoko/kugetsu#999999")
+expected="https://github.com/shoko/kugetsu.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url with large issue number"
+else
+    fail "get_repo_url with large issue number" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_worktree_name standard
+echo "--- Test: issue_ref_to_worktree_name standard ---"
+result=$(issue_ref_to_worktree_name "github.com/shoko/kugetsu#14")
+expected="github.com-shoko-kugetsu-14"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_worktree_name standard"
+else
+    fail "issue_ref_to_worktree_name standard" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_worktree_name with custom instance
+echo "--- Test: issue_ref_to_worktree_name custom instance ---"
+result=$(issue_ref_to_worktree_name "git.fbrns.co/shoko/kugetsu#158")
+expected="git.fbrns.co-shoko-kugetsu-158"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_worktree_name custom instance"
+else
+    fail "issue_ref_to_worktree_name custom instance" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_branch_name with number
+echo "--- Test: issue_ref_to_branch_name with number ---"
+result=$(issue_ref_to_branch_name "github.com/shoko/kugetsu#14")
+expected="fix/issue-14"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_branch_name with number"
+else
+    fail "issue_ref_to_branch_name with number" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_branch_name with discuss suffix
+# Note: #-discuss falls through to fix/issue-temp because #[^-]+$ doesn't match #-<text-with-hyphens>
+echo "--- Test: issue_ref_to_branch_name with discuss suffix ---"
+result=$(issue_ref_to_branch_name "github.com/shoko/kugetsu#-discuss")
+expected="fix/issue-temp"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_branch_name with discuss suffix"
+else
+    fail "issue_ref_to_branch_name with discuss suffix" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_branch_name with identifier that has no hyphens
+echo "--- Test: issue_ref_to_branch_name with pure identifier ---"
+result=$(issue_ref_to_branch_name "github.com/shoko/kugetsu#someid")
+expected="fix/someid"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_branch_name with pure identifier"
+else
+    fail "issue_ref_to_branch_name with pure identifier" "$expected" "$result"
+fi
+
+# Test: issue_ref_to_branch_name without number
+echo "--- Test: issue_ref_to_branch_name without number ---"
+result=$(issue_ref_to_branch_name "github.com/shoko/kugetsu#abc")
+expected="fix/abc"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_branch_name without number"
+else
+    fail "issue_ref_to_branch_name without number" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with short form
+echo "--- Test: extract_issue_ref_from_message short form ---"
+result=$(extract_issue_ref_from_message "github.com/shoko/kugetsu#14")
+expected="github.com/shoko/kugetsu#14"
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message short form"
+else
+    fail "extract_issue_ref_from_message short form" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with https URL
+echo "--- Test: extract_issue_ref_from_message with https URL ---"
+result=$(extract_issue_ref_from_message "https://github.com/shoko/kugetsu/issues/14")
+expected="github.com/shoko/kugetsu#14"
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message with https URL"
+else
+    fail "extract_issue_ref_from_message with https URL" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with custom instance
+echo "--- Test: extract_issue_ref_from_message custom instance ---"
+result=$(extract_issue_ref_from_message "https://git.fbrns.co/shoko/kugetsu/issues/158")
+expected="git.fbrns.co/shoko/kugetsu#158"
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message custom instance"
+else
+    fail "extract_issue_ref_from_message custom instance" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with empty message
+echo "--- Test: extract_issue_ref_from_message empty message ---"
+result=$(extract_issue_ref_from_message "")
+expected=""
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message empty message"
+else
+    fail "extract_issue_ref_from_message empty message" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with no issue ref
+echo "--- Test: extract_issue_ref_from_message no issue ref ---"
+result=$(extract_issue_ref_from_message "Just a regular message without any issue reference")
+expected=""
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message no issue ref"
+else
+    fail "extract_issue_ref_from_message no issue ref" "$expected" "$result"
+fi
+
+# Test: extract_issue_ref_from_message with gitlab URL
+echo "--- Test: extract_issue_ref_from_message gitlab URL ---"
+result=$(extract_issue_ref_from_message "https://gitlab.com/someuser/somerepo/issues/42")
+expected="gitlab.com/someuser/somerepo#42"
+if [ "$result" = "$expected" ]; then
+    pass "extract_issue_ref_from_message gitlab URL"
+else
+    fail "extract_issue_ref_from_message gitlab URL" "$expected" "$result"
+fi
+
+# Test: validate_issue_ref valid format
+echo "--- Test: validate_issue_ref valid format ---"
+if validate_issue_ref "github.com/shoko/kugetsu#14" 2>/dev/null; then
+    pass "validate_issue_ref valid format"
+else
+    fail "validate_issue_ref valid format" "exit 0" "exit non-zero"
+fi
+
+# Test: validate_issue_ref invalid format (missing parts)
+echo "--- Test: validate_issue_ref invalid format ---"
+if ! validate_issue_ref "invalid-ref" 2>/dev/null; then
+    pass "validate_issue_ref invalid format"
+else
+    fail "validate_issue_ref invalid format" "exit non-zero" "exit 0"
+fi
+
+# Test: issue_ref_to_filename
+echo "--- Test: issue_ref_to_filename ---"
+result=$(issue_ref_to_filename "github.com/shoko/kugetsu#14")
+expected="github.com-shoko-kugetsu-14.json"
+if [ "$result" = "$expected" ]; then
+    pass "issue_ref_to_filename"
+else
+    fail "issue_ref_to_filename" "$expected" "$result"
+fi
+
+# Test: filename_to_issue_ref
+echo "--- Test: filename_to_issue_ref ---"
+result=$(filename_to_issue_ref "github.com-shoko-kugetsu-14.json")
+expected="github.com/shoko/kugetsu#14"
+if [ "$result" = "$expected" ]; then
+    pass "filename_to_issue_ref"
+else
+    fail "filename_to_issue_ref" "$expected" "$result"
+fi
+
+# Test: get_repo_url with org having hyphen
+echo "--- Test: get_repo_url with hyphenated org ---"
+result=$(get_repo_url "github.com/my-org/my-repo#1")
+expected="https://github.com/my-org/my-repo.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url with hyphenated org"
+else
+    fail "get_repo_url with hyphenated org" "$expected" "$result"
+fi
+
+# Test: get_repo_url with repo having dots
+echo "--- Test: get_repo_url with dotted repo ---"
+result=$(get_repo_url "github.com/shoko/kugetsu.utils#5")
+expected="https://github.com/shoko/kugetsu.utils.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url with dotted repo"
+else
+    fail "get_repo_url with dotted repo" "$expected" "$result"
+fi
+
+# Test: get_repo_url with underscore in username
+echo "--- Test: get_repo_url with underscore in user ---"
+result=$(get_repo_url "github.com/my_user/my_repo#10")
+expected="https://github.com/my_user/my_repo.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url with underscore in user"
+else
+    fail "get_repo_url with underscore in user" "$expected" "$result"
+fi
+
+# Test: get_repo_url with instance not in GIT_SERVERS (fallback)
+echo "--- Test: get_repo_url with unknown instance ---"
+result=$(get_repo_url "unknown.example.com/owner/repo#1")
+expected="https://unknown.example.com/owner/repo.git"
+if [ "$result" = "$expected" ]; then
+    pass "get_repo_url with unknown instance"
+else
+    fail "get_repo_url with unknown instance" "$expected" "$result"
+fi
+
+echo ""
+echo "=== Test Results ==="
+echo "Passed: $PASS"
+echo "Failed: $FAIL"
+
+if [ $FAIL -eq 0 ]; then
+    echo "All tests passed!"
+    exit 0
+else
+    echo "Some tests failed!"
+    exit 1
+fi