From 54eb69d1c7ee494750e03ed91ba489b43737f6f2 Mon Sep 17 00:00:00 2001
From: yukkop <hectic.yukkop@gmail.com>
Date: Mon, 28 Sep 2026 00:24:44 +0000
Subject: [PATCH] feat: clear unneccessary backend from kanban

---
 package/gitea-kanban-tui/Cargo.toml    |   2 +-
 package/gitea-kanban-tui/README.md     |  31 +---
 package/gitea-kanban-tui/src/api.rs    |  56 +------
 package/gitea-kanban-tui/src/app.rs    | 211 ++++++-------------------
 package/gitea-kanban-tui/src/config.rs |  85 ++--------
 package/gitea-kanban-tui/src/main.rs   |  32 ++--
 package/gitea-kanban-tui/src/model.rs  |  94 -----------
 7 files changed, 84 insertions(+), 427 deletions(-)

diff --git a/package/gitea-kanban-tui/Cargo.toml b/package/gitea-kanban-tui/Cargo.toml
index bd0bced4..7cb8cb16 100644
--- a/package/gitea-kanban-tui/Cargo.toml
+++ b/package/gitea-kanban-tui/Cargo.toml
@@ -2,7 +2,7 @@
 name = "gitea-kanban-tui"
 version = "0.1.0"
 edition = "2021"
-description = "Native-project and label-backed Gitea Kanban terminal interface"
+description = "Native-project Gitea Kanban terminal interface"
 license = "MIT"
 
 [dependencies]
diff --git a/package/gitea-kanban-tui/README.md b/package/gitea-kanban-tui/README.md
index a41ded9c..5a742021 100644
--- a/package/gitea-kanban-tui/README.md
+++ b/package/gitea-kanban-tui/README.md
@@ -1,33 +1,25 @@
 # gitea-kanban-tui
 
-Keyboard-driven Kanban board for the custom Gitea fork. Native repository
-Projects are supported alongside the legacy repository-label backend. Backend
-selection is explicit; API failures never trigger a silent fallback.
+Keyboard-driven Kanban board for native repository Projects in custom Gitea fork.
 
 ## Configuration
 
-Create repository labels such as `kanban/01 Todo`, `kanban/02 Doing`, and
-`kanban/03 Done`. Column suffixes are sorted lexically, so numeric prefixes
-provide explicit ordering.
-
 Required configuration can come from flags or environment variables:
 
 | Flag | Environment | Meaning |
 | --- | --- | --- |
 | `--url` | `GITEA_URL` | Gitea base URL |
 | `--token-file` | `GITEA_TOKEN_FILE` | File containing API token |
-| `--backend` | `GITEA_KANBAN_BACKEND` | Required: `projects` or `labels` |
+| — | `GITEA_TOKEN` | API token fallback when no token file is configured |
 | `--project` | `GITEA_PROJECT` | Exact native project name |
 | `--project-id` | `GITEA_PROJECT_ID` | Native project ID instead of name |
 | positional `OWNER` | `GITEA_OWNER` | Repository owner |
 | positional `REPO` | `GITEA_REPO` | Repository name |
-| `--label-prefix` | `GITEA_LABEL_PREFIX` | Column prefix; default `kanban/` |
 
 Native mode requires an enabled repository Projects unit, project read/write
 repository permission, and a token with `read:issue`/`write:issue` scope. Issue
 creation/editing follows Gitea issue permissions; deletion requires repository
-admin permission in this fork. Label mode requires repository issue read/write
-permission. Token values are sent
+admin permission in this fork. Token values are sent
 only through Gitea's `Authorization` header and are never printed. Token-file
 input takes precedence over environment variables. Remote URLs must use HTTPS; plain HTTP is
 accepted only for loopback development.
@@ -36,7 +28,7 @@ accepted only for loopback development.
 export GITEA_URL=https://gitea.hectic-lab.com
 export GITEA_TOKEN_FILE="$HOME/.config/gitea/token"
 cargo run --manifest-path package/gitea-kanban-tui/Cargo.toml -- \
-  --backend projects --project Kanban yukkop util.nix
+  --project Kanban yukkop util.nix
 ```
 
 Alternatively:
@@ -44,14 +36,14 @@ Alternatively:
 ```sh
 nix develop .#ratatui
 cargo run --manifest-path package/gitea-kanban-tui/Cargo.toml -- \
-  --backend projects --project-id 1 owner repo
+  --project-id 1 owner repo
 ```
 
 ## Keys
 
 - Arrow keys or `h`/`j`/`k`/`l`: focus column/card
 - `H`/`L`: move focused card left/right
-- `r`: refresh labels and open issues
+- `r`: refresh project columns and issues
 - `?`: toggle help
 - `q`: quit
 
@@ -65,17 +57,6 @@ focused issue title/body, and `d` deletes it after confirmation. In the editor,
 `Esc` cancels. Closed projects, archived repositories, disabled Projects units,
 unassigned issues, and cross-repository IDs are rejected by the server.
 
-Explicit fallback command:
-
-```sh
-cargo run --manifest-path package/gitea-kanban-tui/Cargo.toml -- \
-  --backend labels --label-prefix kanban/ owner repo
-```
-
-In label mode, moving a card replaces its issue labels: all labels matching the configured
-column prefix are removed, the target column label is added, and non-column
-labels are preserved. The client uses only repository label and issue REST
-endpoints under `/api/v1`.
 
 ## Development
 
diff --git a/package/gitea-kanban-tui/src/api.rs b/package/gitea-kanban-tui/src/api.rs
index efa278d9..2f02cbd0 100644
--- a/package/gitea-kanban-tui/src/api.rs
+++ b/package/gitea-kanban-tui/src/api.rs
@@ -9,8 +9,7 @@ use serde::de::DeserializeOwned;
 
 use crate::config::Config;
 use crate::model::{
-    CreateIssuePayload, EditIssuePayload, Issue, Label, MoveProjectIssuePayload, Project,
-    ProjectColumn, ReplaceLabelsPayload,
+    CreateIssuePayload, EditIssuePayload, Issue, MoveProjectIssuePayload, Project, ProjectColumn,
 };
 use crate::text::sanitize_terminal_text;
 
@@ -28,13 +27,6 @@ pub trait GiteaApi {
         issue_id: u64,
         payload: &MoveProjectIssuePayload,
     ) -> Result<(), ApiError>;
-    fn list_labels(&self) -> Result<Vec<Label>, ApiError>;
-    fn list_open_issues(&self) -> Result<Vec<Issue>, ApiError>;
-    fn replace_issue_labels(
-        &self,
-        issue_number: u64,
-        payload: &ReplaceLabelsPayload,
-    ) -> Result<(), ApiError>;
     fn create_issue(&self, payload: &CreateIssuePayload) -> Result<Issue, ApiError>;
     fn edit_issue(&self, issue_number: u64, payload: &EditIssuePayload) -> Result<Issue, ApiError>;
     fn delete_issue(&self, issue_number: u64) -> Result<(), ApiError>;
@@ -227,42 +219,6 @@ impl GiteaApi for GiteaClient {
         Ok(())
     }
 
-    fn list_labels(&self) -> Result<Vec<Label>, ApiError> {
-        self.get_all("labels", "listing repository labels", &[])
-    }
-
-    fn list_open_issues(&self) -> Result<Vec<Issue>, ApiError> {
-        self.get_all(
-            "issues",
-            "listing open repository issues",
-            &[("state", "open"), ("type", "issues")],
-        )
-    }
-
-    fn replace_issue_labels(
-        &self,
-        issue_number: u64,
-        payload: &ReplaceLabelsPayload,
-    ) -> Result<(), ApiError> {
-        let response = self
-            .client
-            .put(self.endpoint(&format!("issues/{issue_number}/labels"))?)
-            .header("Authorization", format!("token {}", self.token))
-            .json(payload)
-            .send()
-            .map_err(|error| {
-                ApiError(format!(
-                    "cannot reach Gitea while moving issue #{issue_number}: {error}"
-                ))
-            })?;
-        check_response(
-            response,
-            &format!("replacing labels on issue #{issue_number}"),
-            &self.token,
-        )?;
-        Ok(())
-    }
-
     fn create_issue(&self, payload: &CreateIssuePayload) -> Result<Issue, ApiError> {
         let response = self
             .client
@@ -331,7 +287,7 @@ fn check_response(response: Response, operation: &str, token: &str) -> Result<Re
             " Check token validity and repository issue permissions."
         }
         StatusCode::NOT_FOUND | StatusCode::METHOD_NOT_ALLOWED => {
-            " Check repository owner/name and whether this Gitea version supports repository issue-label APIs."
+            " Check repository owner/name and whether this Gitea version supports native project APIs."
         }
         _ => "",
     };
@@ -376,10 +332,8 @@ mod tests {
             token: "secret".to_owned(),
             owner: "owner name".to_owned(),
             repo: "repo/name".to_owned(),
-            backend: crate::config::Backend::Labels,
-            project: None,
+            project: Some("Kanban".to_owned()),
             project_id: None,
-            label_prefix: "kanban/".to_owned(),
         }
     }
 
@@ -433,8 +387,8 @@ mod tests {
             .expect("client should build");
 
         assert_eq!(
-            client.endpoint("labels").expect("endpoint").as_str(),
-            "https://gitea.example/subpath/api/v1/repos/owner%20name/repo%2Fname/labels"
+            client.endpoint("projects").expect("endpoint").as_str(),
+            "https://gitea.example/subpath/api/v1/repos/owner%20name/repo%2Fname/projects"
         );
     }
 
diff --git a/package/gitea-kanban-tui/src/app.rs b/package/gitea-kanban-tui/src/app.rs
index 22e001b9..fa630895 100644
--- a/package/gitea-kanban-tui/src/app.rs
+++ b/package/gitea-kanban-tui/src/app.rs
@@ -1,8 +1,7 @@
 use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 
 use crate::model::{
-    extract_columns, replacement_payload, ColumnSpec, EditIssuePayload, Issue, Label,
-    MoveProjectIssuePayload, Project, ProjectColumn, ReplaceLabelsPayload,
+    ColumnSpec, EditIssuePayload, Issue, MoveProjectIssuePayload, Project, ProjectColumn,
 };
 
 #[derive(Clone, Debug)]
@@ -19,7 +18,7 @@ pub struct App {
     pub status: String,
     pub show_help: bool,
     pub editor: Option<EditorState>,
-    backend: BoardBackend,
+    project_id: u64,
 }
 
 #[derive(Clone, Debug, PartialEq, Eq)]
@@ -59,12 +58,6 @@ pub enum IssueAction {
     },
 }
 
-#[derive(Clone, Debug)]
-enum BoardBackend {
-    Projects { project_id: u64 },
-    Labels { prefix: String },
-}
-
 #[derive(Debug, PartialEq, Eq)]
 pub enum MoveAction {
     Project {
@@ -72,10 +65,6 @@ pub enum MoveAction {
         project_id: u64,
         payload: MoveProjectIssuePayload,
     },
-    Labels {
-        issue_number: u64,
-        payload: ReplaceLabelsPayload,
-    },
 }
 
 #[derive(Debug, PartialEq, Eq)]
@@ -86,59 +75,6 @@ pub struct MoveRequest {
 }
 
 impl App {
-    pub fn new_labels(
-        labels: Vec<Label>,
-        issues: Vec<Issue>,
-        label_prefix: String,
-    ) -> Result<Self, String> {
-        let specs = extract_columns(&labels, &label_prefix);
-        if specs.is_empty() {
-            return Err(format!(
-                "no Kanban columns found; create repository labels such as {label_prefix}Todo"
-            ));
-        }
-
-        let mut columns: Vec<Column> = specs
-            .into_iter()
-            .map(|spec| Column {
-                spec,
-                cards: Vec::new(),
-            })
-            .collect();
-        for issue in issues {
-            if let Some(column) = columns
-                .iter_mut()
-                .find(|column| issue.labels.iter().any(|label| label.id == column.spec.id))
-            {
-                column.cards.push(issue);
-            }
-        }
-
-        if columns.iter().all(|column| column.cards.is_empty()) {
-            return Err(format!(
-                "no cards found; add a {label_prefix}<column> label to an open issue"
-            ));
-        }
-
-        let focused_column = columns
-            .iter()
-            .position(|column| !column.cards.is_empty())
-            .unwrap_or(0);
-        let focused_cards = vec![0; columns.len()];
-        Ok(Self {
-            board_title: format!("labels {label_prefix}*"),
-            columns,
-            focused_column,
-            focused_cards,
-            status: "Ready".to_owned(),
-            show_help: false,
-            editor: None,
-            backend: BoardBackend::Labels {
-                prefix: label_prefix,
-            },
-        })
-    }
-
     pub fn new_project(
         project: Project,
         project_columns: Vec<ProjectColumn>,
@@ -156,7 +92,6 @@ impl App {
             .map(|(column, cards)| Column {
                 spec: ColumnSpec {
                     id: column.id,
-                    label: None,
                     title: column.title,
                 },
                 cards,
@@ -175,9 +110,7 @@ impl App {
             status: "Ready".to_owned(),
             show_help: false,
             editor: None,
-            backend: BoardBackend::Projects {
-                project_id: project.id,
-            },
+            project_id: project.id,
         })
     }
 
@@ -214,18 +147,12 @@ impl App {
             return None;
         }
         let issue = self.focused_card()?;
-        let action = match &self.backend {
-            BoardBackend::Projects { project_id } => MoveAction::Project {
-                issue_id: issue.id,
-                project_id: *project_id,
-                payload: MoveProjectIssuePayload {
-                    column_id: self.columns[target].spec.id,
-                    sorting: None,
-                },
-            },
-            BoardBackend::Labels { prefix } => MoveAction::Labels {
-                issue_number: issue.number,
-                payload: replacement_payload(issue, prefix, self.columns[target].spec.id),
+        let action = MoveAction::Project {
+            issue_id: issue.id,
+            project_id: self.project_id,
+            payload: MoveProjectIssuePayload {
+                column_id: self.columns[target].spec.id,
+                sorting: None,
             },
         };
         Some(MoveRequest {
@@ -237,14 +164,8 @@ impl App {
 
     pub fn apply_move(&mut self, request: MoveRequest) {
         let selected = self.focused_cards[request.source];
-        let mut issue = self.columns[request.source].cards.remove(selected);
+        let issue = self.columns[request.source].cards.remove(selected);
         let issue_number = issue.number;
-        if let BoardBackend::Labels { prefix } = &self.backend {
-            issue.labels.retain(|label| !label.name.starts_with(prefix));
-            if let Some(label) = &self.columns[request.target].spec.label {
-                issue.labels.push(label.clone());
-            }
-        }
         self.columns[request.target].cards.push(issue);
         self.focused_cards[request.source] =
             selected.min(self.columns[request.source].cards.len().saturating_sub(1));
@@ -254,16 +175,10 @@ impl App {
     }
 
     pub fn begin_create(&mut self) {
-        if !matches!(&self.backend, BoardBackend::Projects { .. }) {
-            self.status = "Issue editing is available only with --backend projects".to_owned();
-            return;
-        }
-        let project_id = match &self.backend {
-            BoardBackend::Projects { project_id } => *project_id,
-            BoardBackend::Labels { .. } => unreachable!("backend checked above"),
-        };
         self.editor = Some(EditorState {
-            mode: EditorMode::Create { project_id },
+            mode: EditorMode::Create {
+                project_id: self.project_id,
+            },
             field: EditorField::Title,
             title: String::new(),
             body: String::new(),
@@ -271,10 +186,6 @@ impl App {
     }
 
     pub fn begin_edit(&mut self) {
-        if !matches!(&self.backend, BoardBackend::Projects { .. }) {
-            self.status = "Issue editing is available only with --backend projects".to_owned();
-            return;
-        }
         let Some(issue) = self.focused_card().cloned() else {
             self.status = "No issue selected".to_owned();
             return;
@@ -290,10 +201,6 @@ impl App {
     }
 
     pub fn begin_delete(&mut self) {
-        if !matches!(&self.backend, BoardBackend::Projects { .. }) {
-            self.status = "Issue editing is available only with --backend projects".to_owned();
-            return;
-        }
         let Some(issue) = self.focused_card() else {
             self.status = "No issue selected".to_owned();
             return;
@@ -430,34 +337,44 @@ mod tests {
 
     use super::*;
 
-    fn label(id: u64, name: &str) -> Label {
-        Label {
-            id,
-            name: name.to_owned(),
-            color: String::new(),
-        }
-    }
-
     fn app() -> App {
-        App::new_labels(
-            vec![label(1, "kanban/01 Todo"), label(2, "kanban/02 Done")],
+        App::new_project(
+            Project {
+                id: 8,
+                title: "Kanban".to_owned(),
+                is_closed: false,
+            },
             vec![
-                Issue {
-                    id: 1,
-                    number: 1,
-                    title: "First".to_owned(),
-                    body: None,
-                    labels: vec![label(1, "kanban/01 Todo"), label(7, "bug")],
+                ProjectColumn {
+                    id: 10,
+                    title: "Todo".to_owned(),
+                    color: String::new(),
+                    sorting: 0,
                 },
-                Issue {
-                    id: 2,
-                    number: 2,
-                    title: "Second".to_owned(),
-                    body: None,
-                    labels: vec![label(1, "kanban/01 Todo")],
+                ProjectColumn {
+                    id: 20,
+                    title: "Done".to_owned(),
+                    color: String::new(),
+                    sorting: 1,
                 },
             ],
-            "kanban/".to_owned(),
+            vec![
+                vec![
+                    Issue {
+                        id: 1,
+                        number: 1,
+                        title: "First".to_owned(),
+                        body: None,
+                    },
+                    Issue {
+                        id: 2,
+                        number: 2,
+                        title: "Second".to_owned(),
+                        body: None,
+                    },
+                ],
+                Vec::new(),
+            ],
         )
         .expect("board builds")
     }
@@ -478,26 +395,6 @@ mod tests {
         assert_eq!(app.focused_column, 1);
     }
 
-    #[test]
-    fn move_preparation_and_commit_preserve_non_column_labels() {
-        let mut app = app();
-        let request = app.prepare_move(1).expect("can move right");
-        assert!(matches!(
-            request.action,
-            MoveAction::Labels { ref payload, .. } if payload.labels == vec![7, 2]
-        ));
-
-        app.apply_move(request);
-
-        assert_eq!(app.focused_column, 1);
-        assert_eq!(app.columns[0].cards.len(), 1);
-        assert_eq!(app.columns[1].cards[0].number, 1);
-        assert!(app.columns[1].cards[0]
-            .labels
-            .iter()
-            .any(|label| label.name == "bug"));
-    }
-
     #[test]
     fn cannot_move_past_board_edge() {
         let app = app();
@@ -551,7 +448,6 @@ mod tests {
                     number: 7,
                     title: "Fix".to_owned(),
                     body: None,
-                    labels: Vec::new(),
                 }],
                 Vec::new(),
             ],
@@ -603,19 +499,4 @@ mod tests {
         ));
         assert!(app.editor.is_none());
     }
-
-    #[test]
-    fn label_board_without_cards_keeps_actionable_error() {
-        let result = App::new_labels(
-            vec![label(1, "kanban/Todo"), label(2, "kanban/Done")],
-            Vec::new(),
-            "kanban/".to_owned(),
-        );
-        let error = match result {
-            Ok(_) => panic!("empty board should report missing cards"),
-            Err(error) => error,
-        };
-
-        assert!(error.contains("add a kanban/<column> label"));
-    }
 }
diff --git a/package/gitea-kanban-tui/src/config.rs b/package/gitea-kanban-tui/src/config.rs
index ee205b38..556ca8e3 100644
--- a/package/gitea-kanban-tui/src/config.rs
+++ b/package/gitea-kanban-tui/src/config.rs
@@ -5,19 +5,13 @@ use std::fs;
 use std::os::unix::fs::PermissionsExt;
 use std::path::PathBuf;
 
-use clap::{Parser, ValueEnum};
-
-#[derive(Clone, Copy, Debug, PartialEq, Eq, ValueEnum)]
-pub enum Backend {
-    Projects,
-    Labels,
-}
+use clap::Parser;
 
 #[derive(Parser)]
 #[command(
     name = "gitea-kanban-tui",
     version,
-    about = "Browse and move Gitea issues using native projects or labels"
+    about = "Browse and move Gitea issues using native projects"
 )]
 pub struct Args {
     /// Gitea base URL; falls back to GITEA_URL
@@ -28,22 +22,14 @@ pub struct Args {
     #[arg(long, value_name = "PATH")]
     pub token_file: Option<PathBuf>,
 
-    /// Board backend: projects or labels
-    #[arg(long, value_enum)]
-    pub backend: Option<Backend>,
-
-    /// Exact native project name; used with --backend projects
+    /// Exact native project name
     #[arg(long)]
     pub project: Option<String>,
 
-    /// Native project ID; used with --backend projects
+    /// Native project ID
     #[arg(long)]
     pub project_id: Option<u64>,
 
-    /// Label prefix used for columns
-    #[arg(long)]
-    pub label_prefix: Option<String>,
-
     /// Repository owner; falls back to GITEA_OWNER
     pub owner: Option<String>,
 
@@ -57,10 +43,8 @@ pub struct Config {
     pub token: String,
     pub owner: String,
     pub repo: String,
-    pub backend: Backend,
     pub project: Option<String>,
     pub project_id: Option<u64>,
-    pub label_prefix: String,
 }
 
 #[derive(Debug, PartialEq, Eq)]
@@ -98,23 +82,6 @@ impl Config {
             "repository name",
             "REPO argument or GITEA_REPO",
         )?;
-        let backend = if let Some(backend) = args.backend {
-            backend
-        } else if let Some(value) = env_var("GITEA_KANBAN_BACKEND") {
-            match value.as_str() {
-                "projects" => Backend::Projects,
-                "labels" => Backend::Labels,
-                _ => {
-                    return Err(ConfigError(
-                        "GITEA_KANBAN_BACKEND must be 'projects' or 'labels'".to_owned(),
-                    ));
-                }
-            }
-        } else {
-            return Err(ConfigError(
-                "missing board backend; use --backend projects or --backend labels".to_owned(),
-            ));
-        };
         let project = args
             .project
             .or_else(|| env_var("GITEA_PROJECT"))
@@ -123,22 +90,12 @@ impl Config {
         let project_id = args
             .project_id
             .or_else(|| env_var("GITEA_PROJECT_ID").and_then(|value| value.parse::<u64>().ok()));
-        if backend == Backend::Projects && project.is_some() == project_id.is_some() {
+        if project.is_some() == project_id.is_some() {
             return Err(ConfigError(
-                "projects backend requires exactly one of --project/GITEA_PROJECT or --project-id/GITEA_PROJECT_ID"
+                "projects mode requires exactly one of --project/GITEA_PROJECT or --project-id/GITEA_PROJECT_ID"
                     .to_owned(),
             ));
         }
-        let label_prefix = args
-            .label_prefix
-            .or_else(|| env_var("GITEA_LABEL_PREFIX"))
-            .unwrap_or_else(|| "kanban/".to_owned());
-
-        if label_prefix.trim().is_empty() {
-            return Err(ConfigError(
-                "label prefix cannot be empty; set --label-prefix or GITEA_LABEL_PREFIX".to_owned(),
-            ));
-        }
 
         let token = if let Some(path) = args.token_file {
             read_token_file(path)?
@@ -158,10 +115,8 @@ impl Config {
             token,
             owner,
             repo,
-            backend,
             project,
             project_id,
-            label_prefix,
         })
     }
 }
@@ -229,8 +184,8 @@ mod tests {
             "gitea-kanban-tui",
             "--url",
             "https://gitea.example/",
-            "--backend",
-            "labels",
+            "--project",
+            "Kanban",
             "owner",
             "repo",
         ])
@@ -240,8 +195,7 @@ mod tests {
         assert_eq!(config.base_url, "https://gitea.example");
         assert_eq!(config.owner, "owner");
         assert_eq!(config.repo, "repo");
-        assert_eq!(config.label_prefix, "kanban/");
-        assert_eq!(config.backend, Backend::Labels);
+        assert_eq!(config.project.as_deref(), Some("Kanban"));
         assert_eq!(config.token, "secret");
     }
 
@@ -251,8 +205,6 @@ mod tests {
             "gitea-kanban-tui",
             "--url",
             "https://gitea.example",
-            "--backend",
-            "projects",
             "--project",
             "Kanban",
             "owner",
@@ -261,13 +213,12 @@ mod tests {
         .expect("arguments parse");
 
         let config = Config::from_args_with(args, token_env).expect("config is valid");
-        assert_eq!(config.backend, Backend::Projects);
         assert_eq!(config.project.as_deref(), Some("Kanban"));
         assert_eq!(config.project_id, None);
     }
 
     #[test]
-    fn requires_explicit_backend() {
+    fn requires_project_selector() {
         let args = Args::try_parse_from([
             "gitea-kanban-tui",
             "--url",
@@ -277,8 +228,9 @@ mod tests {
         ])
         .expect("arguments parse");
 
-        let error = Config::from_args_with(args, token_env).expect_err("backend is required");
-        assert!(error.to_string().contains("--backend projects"));
+        let error =
+            Config::from_args_with(args, token_env).expect_err("project selector is required");
+        assert!(error.to_string().contains("--project"));
     }
 
     #[test]
@@ -287,8 +239,6 @@ mod tests {
             "gitea-kanban-tui",
             "--url",
             "https://gitea.example",
-            "--backend",
-            "projects",
             "owner",
             "repo",
         ])
@@ -305,17 +255,16 @@ mod tests {
             match name {
                 "GITEA_URL" => Some("https://gitea.example"),
                 "GITEA_TOKEN" => Some("secret"),
-                "GITEA_KANBAN_BACKEND" => Some("labels"),
+                "GITEA_PROJECT" => Some("Kanban"),
                 "GITEA_OWNER" => Some("owner"),
                 "GITEA_REPO" => Some("repo"),
-                "GITEA_LABEL_PREFIX" => Some("board/"),
                 _ => None,
             }
             .map(str::to_owned)
         })
         .expect("config is valid");
 
-        assert_eq!(config.label_prefix, "board/");
+        assert_eq!(config.project.as_deref(), Some("Kanban"));
         assert_eq!(config.owner, "owner");
     }
 
@@ -325,8 +274,8 @@ mod tests {
             "gitea-kanban-tui",
             "--url",
             "https://gitea.example",
-            "--backend",
-            "labels",
+            "--project",
+            "Kanban",
             "owner",
             "repo",
         ])
diff --git a/package/gitea-kanban-tui/src/main.rs b/package/gitea-kanban-tui/src/main.rs
index 802df64f..6e693018 100644
--- a/package/gitea-kanban-tui/src/main.rs
+++ b/package/gitea-kanban-tui/src/main.rs
@@ -5,7 +5,7 @@ use crossterm::event::{self, Event, KeyCode, KeyEventKind};
 
 use gitea_kanban_tui::api::{resolve_project, GiteaApi, GiteaClient};
 use gitea_kanban_tui::app::{App, IssueAction, MoveAction};
-use gitea_kanban_tui::config::{Backend, Config};
+use gitea_kanban_tui::config::Config;
 use gitea_kanban_tui::model::CreateIssuePayload;
 use gitea_kanban_tui::terminal::TerminalGuard;
 use gitea_kanban_tui::text::sanitize_terminal_text;
@@ -108,24 +108,14 @@ fn issue_action(client: &impl GiteaApi, config: &Config, app: &mut App, action:
 }
 
 fn load_board(client: &impl GiteaApi, config: &Config) -> Result<App, Box<dyn Error>> {
-    match config.backend {
-        Backend::Projects => {
-            let projects = client.list_projects()?;
-            let project = resolve_project(&projects, config.project.as_deref(), config.project_id)?;
-            let columns = client.list_project_columns(project.id)?;
-            let issues_by_column = columns
-                .iter()
-                .map(|column| client.list_project_column_issues(project.id, column.id))
-                .collect::<Result<Vec<_>, _>>()?;
-            App::new_project(project, columns, issues_by_column).map_err(|error| error.into())
-        }
-        Backend::Labels => {
-            let labels = client.list_labels()?;
-            let issues = client.list_open_issues()?;
-            App::new_labels(labels, issues, config.label_prefix.clone())
-                .map_err(|error| error.into())
-        }
-    }
+    let projects = client.list_projects()?;
+    let project = resolve_project(&projects, config.project.as_deref(), config.project_id)?;
+    let columns = client.list_project_columns(project.id)?;
+    let issues_by_column = columns
+        .iter()
+        .map(|column| client.list_project_column_issues(project.id, column.id))
+        .collect::<Result<Vec<_>, _>>()?;
+    App::new_project(project, columns, issues_by_column).map_err(|error| error.into())
 }
 
 fn move_card(client: &impl GiteaApi, app: &mut App, offset: isize) {
@@ -139,10 +129,6 @@ fn move_card(client: &impl GiteaApi, app: &mut App, offset: isize) {
             project_id,
             payload,
         } => client.move_project_issue(*project_id, *issue_id, payload),
-        MoveAction::Labels {
-            issue_number,
-            payload,
-        } => client.replace_issue_labels(*issue_number, payload),
     };
     match result {
         Ok(()) => app.apply_move(request),
diff --git a/package/gitea-kanban-tui/src/model.rs b/package/gitea-kanban-tui/src/model.rs
index 2f1e2f1a..2276692b 100644
--- a/package/gitea-kanban-tui/src/model.rs
+++ b/package/gitea-kanban-tui/src/model.rs
@@ -1,13 +1,5 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Clone, Debug, Deserialize, PartialEq, Eq)]
-pub struct Label {
-    pub id: u64,
-    pub name: String,
-    #[serde(default)]
-    pub color: String,
-}
-
 #[derive(Clone, Debug, Deserialize, PartialEq, Eq)]
 pub struct Issue {
     pub id: u64,
@@ -15,8 +7,6 @@ pub struct Issue {
     pub title: String,
     #[serde(default)]
     pub body: Option<String>,
-    #[serde(default)]
-    pub labels: Vec<Label>,
 }
 
 #[derive(Debug, Serialize, PartialEq, Eq)]
@@ -35,7 +25,6 @@ pub struct EditIssuePayload {
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct ColumnSpec {
     pub id: u64,
-    pub label: Option<Label>,
     pub title: String,
 }
 
@@ -64,93 +53,10 @@ pub struct MoveProjectIssuePayload {
     pub sorting: Option<u64>,
 }
 
-#[derive(Debug, Serialize, PartialEq, Eq)]
-pub struct ReplaceLabelsPayload {
-    pub labels: Vec<u64>,
-}
-
-pub fn extract_columns(labels: &[Label], prefix: &str) -> Vec<ColumnSpec> {
-    let mut columns: Vec<ColumnSpec> = labels
-        .iter()
-        .filter_map(|label| {
-            let title = label.name.strip_prefix(prefix)?;
-            if title.is_empty() {
-                None
-            } else {
-                Some(ColumnSpec {
-                    id: label.id,
-                    label: Some(label.clone()),
-                    title: title.to_owned(),
-                })
-            }
-        })
-        .collect();
-    columns.sort_by(|left, right| left.title.cmp(&right.title));
-    columns
-}
-
-pub fn replacement_payload(
-    issue: &Issue,
-    column_prefix: &str,
-    target_label_id: u64,
-) -> ReplaceLabelsPayload {
-    let mut labels: Vec<u64> = issue
-        .labels
-        .iter()
-        .filter(|label| !label.name.starts_with(column_prefix))
-        .map(|label| label.id)
-        .collect();
-    labels.push(target_label_id);
-    ReplaceLabelsPayload { labels }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;
 
-    fn label(id: u64, name: &str) -> Label {
-        Label {
-            id,
-            name: name.to_owned(),
-            color: String::new(),
-        }
-    }
-
-    #[test]
-    fn extracts_prefixed_columns_in_lexical_order() {
-        let labels = vec![
-            label(1, "bug"),
-            label(3, "kanban/Doing"),
-            label(2, "kanban/Todo"),
-            label(4, "kanban/"),
-        ];
-
-        let columns = extract_columns(&labels, "kanban/");
-
-        assert_eq!(columns.len(), 2);
-        assert_eq!(columns[0].title, "Doing");
-        assert_eq!(columns[1].label.as_ref().expect("label").id, 2);
-    }
-
-    #[test]
-    fn replacement_removes_columns_and_preserves_other_labels() {
-        let issue = Issue {
-            id: 70,
-            number: 7,
-            title: "Fix it".to_owned(),
-            body: None,
-            labels: vec![label(1, "bug"), label(2, "kanban/Todo"), label(3, "urgent")],
-        };
-
-        let payload = replacement_payload(&issue, "kanban/", 9);
-
-        assert_eq!(payload.labels, vec![1, 3, 9]);
-        assert_eq!(
-            serde_json::to_value(payload).expect("serialize payload"),
-            serde_json::json!({"labels": [1, 3, 9]})
-        );
-    }
-
     #[test]
     fn deserializes_native_project_data_and_move_payload() {
         let project: Project = serde_json::from_value(serde_json::json!({