Add scripttest-based integration tests (#59)

- Complete test coverage for all major bd commands:
  blocked, close, create, dep (add/remove/tree), export, help,
  import, init, list, quickstart, ready, show, stats, update, version
- Test data files validate command behavior and output
- Enables automated testing of full CLI workflows

cmd/bd/testdata/blocked.txt

@@ -0,0 +1,7 @@
+# Test bd blocked command
+bd init --prefix test
+bd create 'First issue'
+bd create 'Second issue' --deps test-1
+bd blocked
+stdout 'Blocked issues'
+stdout 'test-2'

cmd/bd/testdata/close.txt

@@ -0,0 +1,8 @@
+# Test bd close command
+bd init --prefix test
+bd create 'Issue to close'
+bd close test-1 --reason 'Fixed'
+stdout 'Closed test-1'
+
+bd show test-1
+stdout 'closed'

cmd/bd/testdata/create.txt

@@ -0,0 +1,5 @@
+# Test bd create command
+bd init --prefix test
+bd create 'Test issue'
+stdout 'Created issue:'
+stdout 'test-'

cmd/bd/testdata/dep_add.txt

@@ -0,0 +1,10 @@
+# Test bd dep add command
+bd init --prefix test
+bd create 'First issue'
+bd create 'Second issue'
+bd dep add test-2 test-1
+stdout 'Added dependency'
+
+bd show test-2
+stdout 'Depends on'
+stdout 'test-1'

cmd/bd/testdata/dep_remove.txt

@@ -0,0 +1,10 @@
+# Test bd dep remove command
+bd init --prefix test
+bd create 'First issue'
+bd create 'Second issue'
+bd dep add test-2 test-1
+bd dep remove test-2 test-1
+stdout 'Removed dependency'
+
+bd show test-2
+! stdout 'test-1'

cmd/bd/testdata/dep_tree.txt

@@ -0,0 +1,7 @@
+# Test bd dep tree command
+bd init --prefix test
+bd create 'Root issue'
+bd create 'Child issue'
+bd dep add test-2 test-1
+bd dep tree test-1
+stdout 'test-1'

cmd/bd/testdata/export.txt

@@ -0,0 +1,10 @@
+# Test bd export command
+bd init --prefix test
+bd create 'Test issue'
+bd export -o export.jsonl
+exists export.jsonl
+
+# Verify the exported file contains the issue
+bd import -i export.jsonl
+bd list
+stdout 'Test issue'

cmd/bd/testdata/help.txt

@@ -0,0 +1,7 @@
+# Test bd help command
+bd help
+stdout 'Usage:'
+stdout 'Available Commands:'
+stdout 'create'
+stdout 'list'
+stdout 'show'

cmd/bd/testdata/import.txt

@@ -0,0 +1,8 @@
+# Test bd import command
+bd init --prefix test
+bd import -i import.jsonl
+bd show test-99
+stdout 'Imported issue'
+
+-- import.jsonl --
+{"id":"test-99","title":"Imported issue","status":"open","priority":1,"issue_type":"task","created_at":"2025-01-01T00:00:00Z","updated_at":"2025-01-01T00:00:00Z"}

cmd/bd/testdata/init.txt

@@ -0,0 +1,4 @@
+# Test bd init command
+bd init --prefix test
+stdout 'initialized successfully'
+exists .beads/test.db

cmd/bd/testdata/list.txt

@@ -0,0 +1,7 @@
+# Test bd list command
+bd init --prefix test
+bd create 'First issue'
+bd create 'Second issue'
+bd list
+stdout 'First issue'
+stdout 'Second issue'

cmd/bd/testdata/quickstart.txt

@@ -0,0 +1,5 @@
+# Test bd quickstart command
+bd quickstart
+stdout 'Dependency-Aware'
+stdout 'bd init'
+stdout 'bd create'

cmd/bd/testdata/ready.txt

@@ -0,0 +1,5 @@
+# Test bd ready command
+bd init --prefix test
+bd create 'Ready issue'
+bd ready
+stdout 'Ready'

cmd/bd/testdata/show.txt

@@ -0,0 +1,8 @@
+# Test bd show command
+bd init --prefix test
+bd create 'Test issue for show'
+
+bd show test-1
+stdout 'Test issue for show'
+stdout 'Status:'
+stdout 'Priority:'

cmd/bd/testdata/stats.txt

@@ -0,0 +1,9 @@
+# Test bd stats command
+bd init --prefix test
+bd create 'First issue'
+bd create 'Second issue'
+bd close test-1
+bd stats
+stdout 'Total Issues:'
+stdout 'Open:'
+stdout 'Closed:'

cmd/bd/testdata/update.txt

@@ -0,0 +1,8 @@
+# Test bd update command
+bd init --prefix test
+bd create 'Issue to update'
+bd update test-1 --status in_progress
+stdout 'Updated issue:'
+
+bd show test-1
+stdout 'in_progress'

cmd/bd/testdata/version.txt

@@ -0,0 +1,3 @@
+# Test bd version command
+bd version
+stdout 'bd version'