feat: Add openspec-sync-specs and openspec-verify-change skills

- Introduced `openspec-sync-specs` skill to sync delta specs to main specs, allowing intelligent merging of requirements.
- Added `openspec-verify-change` skill to verify implementation against change artifacts, ensuring completeness, correctness, and coherence before archiving.

docs: Create CLAUDE.md for project guidance

- Added CLAUDE.md to provide an overview of the PCLI project, including build, test commands, architecture, and resource addition guidelines.

chore: Add new change and design documents for project filter in status command

- Created `.openspec.yaml`, `design.md`, `proposal.md`, and `tasks.md` for the `add-project-filter-to-status` change.
- Updated specs for CLI commands and status command to include project filtering functionality.

feat: Expand board included parsing in API client

- Added parsing for `labels`, `cardLabels`, and `cardMemberships` in the `GetBoard` response.
- Updated `ListCardsByBoard` to enrich card output with label names, enhancing usability in kanban sync workflows.

client/boards.go

@@ -43,8 +43,11 @@ func (c *Client) GetBoard(ctx context.Context, id string) (*model.Board, error)
 	var response struct {
 		Item     model.Board `json:"item"`
 		Included struct {
-			Lists []model.List `json:"lists"`
-			Cards []model.Card `json:"cards"`
+			Lists           []model.List           `json:"lists"`
+			Cards           []model.Card           `json:"cards"`
+			Labels          []model.Label          `json:"labels"`
+			CardLabels      []model.CardLabel      `json:"cardLabels"`
+			CardMemberships []model.CardMembership `json:"cardMemberships"`
 		} `json:"included"`
 	}
 
@@ -54,6 +57,9 @@ func (c *Client) GetBoard(ctx context.Context, id string) (*model.Board, error)
 
 	response.Item.Lists = response.Included.Lists
 	response.Item.Cards = response.Included.Cards
+	response.Item.Labels = response.Included.Labels
+	response.Item.CardLabels = response.Included.CardLabels
+	response.Item.CardMemberships = response.Included.CardMemberships
 
 	return &response.Item, nil
 }