ci: add test/clippy workflow and gate live/token tests

The docker workflow only builds/pushes; tests were a local responsibility.
Add .github/workflows/ci.yml with two layers:

- test: cargo fmt --check + cargo clippy --workspace --all-targets -D
  warnings + cargo test --workspace (fully offline, no secrets) on every
  push/PR, including forks.
- live: the #[ignore]d live-network tests plus the pixiv token-gated
  tests, run on schedule / manual dispatch / tag pushes only (fork PRs
  cannot read repository secrets), with PIXIV_REFRESH_TOKEN /
  TWITTER_AUTH_TOKEN injected and continue-on-error for flaky sites.

Test gating (documented in AGENTS.md):
- live-network tests now carry #[ignore = "live network: ..."] (twitter 3,
  bsky 2, pixiv bogus-token 1) and run via -- --ignored live.
- pixiv token tests early-return when PIXIV_REFRESH_TOKEN is absent or
  empty (an unset GitHub secret arrives as ""); test_fetch previously
  failed without a token.

Also fixes the three clippy assertions_on_constants warnings in send.rs
(required for -D warnings).

.github/workflows/ci.yml

@@ -0,0 +1,64 @@
+name: CI
+
+# Test/lint gate (offline, no secrets) on every push/PR, plus a live-network
+# job that exercises the real source sites and the token-gated pixiv tests.
+#
+# Layering:
+#   test  — fmt + clippy + the full offline unit suite. Runs on every push
+#           and PR, including forks (it needs no secrets).
+#   live  — the #[ignore]d live-network tests plus the pixiv tests that are
+#           gated on PIXIV_REFRESH_TOKEN. Runs on schedule / manual dispatch
+#           / tag pushes only, because pull requests from forks cannot read
+#           repository secrets. continue-on-error keeps a flaky external site
+#           from blocking, while the run still records the outcome.
+#
+# Test gating convention (keep in sync with AGENTS.md "Testing & QA"):
+#   - pure unit tests: plain #[test] / #[tokio::test], always run.
+#   - live-network tests: #[ignore = "live network: ..."], only run here.
+#   - token-gated tests (pixiv): #[tokio::test] with an early return when
+#     PIXIV_REFRESH_TOKEN is absent or empty (empty = unset CI secret).
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+  schedule:
+    # Weekly probe of the live endpoints, so external API changes surface.
+    - cron: '0 3 * * 1'
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy, rustfmt
+      - uses: Swatinem/rust-cache@v2
+      - name: Check formatting
+        run: cargo fmt --check
+      - name: Lint (deny warnings)
+        run: cargo clippy --workspace --all-targets -- -D warnings
+      - name: Run offline tests
+        run: cargo test --workspace
+
+  live:
+    needs: test
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || startsWith(github.ref, 'refs/tags/v')
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    env:
+      PIXIV_REFRESH_TOKEN: ${{ secrets.PIXIV_REFRESH_TOKEN }}
+      TWITTER_AUTH_TOKEN: ${{ secrets.TWITTER_AUTH_TOKEN }}
+    steps:
+      - uses: actions/checkout@v7
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      # Full suite: with the secret present, the pixiv token-gated tests run;
+      # without it they skip themselves. Live tests stay #[ignore]d here.
+      - name: Run token-gated tests
+        run: cargo test --workspace
+      # The live-network tests, by the "live" name filter (all #[ignore]d).
+      - name: Run live-network tests
+        run: cargo test --workspace -- --ignored live

AGENTS.md

@@ -93,8 +93,8 @@ Docker: `docker build -t tgxmb .` then `docker run --rm -d --name tgxmb --env-fi
 
 - **~80 tests, all inline `#[cfg(test)] mod tests`** — no `tests/` integration directories. Framework: built-in Rust test + `#[tokio::test]` (dev-deps only in `x-media`: tokio macros/rt-multi-thread, dotenv).
 - No mocking framework anywhere (no mockito/wiremock/mockall). Conventions: pure-function units (regex parsing, serde round-trips, chunking, retry math) tested synchronously; async tests use real dependencies — file-backed SQLite via `tempfile` (`queue.rs::new_queue()` helper), live network fetches.
-- Live-network tests exist in `site/twitter/interface.rs` (3), `site/bsky/interface.rs` (2), `site/pixiv/interface.rs`/`api.rs` (env-gated on `PIXIV_REFRESH_TOKEN`/dotenv, skip by early return). Run the full suite with `cargo test --workspace`.
+- Live-network tests exist in `site/twitter/interface.rs` (3), `site/bsky/interface.rs` (2), `site/pixiv/interface.rs`/`api.rs`. Test gating convention (enforced by `.github/workflows/ci.yml`): pure unit tests always run; live-network tests carry `#[ignore = "live network: ..."]` (run via `cargo test --workspace -- --ignored live`); token-gated pixiv tests early-return when `PIXIV_REFRESH_TOKEN` is absent **or empty** (an unset GitHub secret arrives as `""` — `is_err()` alone would run them tokenless and fail). Run the full offline suite with `cargo test --workspace`.
 - Fixtures are inline `serde_json::json!` builder fns (`fixture()`, `thread_json()`, `illust_json()`), not files. The shared `CLIENT` sets `pool_max_idle_per_host(0)` under `#[cfg(test)]` to avoid cross-runtime `DispatchGone`.
-- **CI runs no tests** — `.github/workflows/docker.yml` only builds/pushes the image; verification is a local responsibility.
+- **CI** — `.github/workflows/ci.yml` runs `cargo fmt --check` + `cargo clippy --workspace --all-targets -- -D warnings` + `cargo test --workspace` (offline, no secrets, on every push/PR) and a `live` job (schedule/manual/tag only, `PIXIV_REFRESH_TOKEN`/`TWITTER_AUTH_TOKEN` from secrets, `continue-on-error`) for the `#[ignore]`d live + token tests. `.github/workflows/docker.yml` builds/pushes the image only.
 - Untested and hard to test without a mock seam: `handlers.rs` (depends directly on teloxide `Bot`); `main.rs`, `config.rs`, `state.rs`; `media.rs`, `lib.rs`, all `model.rs`.
-- No coverage tracking, no lint gate in CI.
+- No coverage tracking.

crates/x-media/src/site/bsky/interface.rs

@@ -416,6 +416,7 @@ mod tests {
     }
 
     #[tokio::test]
+    #[ignore = "live network: requires outbound HTTPS to public.api.bsky.app"]
     async fn live_fetch_with_photos() {
         let fetched =
             fetch_from_url("https://bsky.app/profile/asagi0398.bsky.social/post/3mqkhrq5w6k2m")
@@ -429,6 +430,7 @@ mod tests {
     }
 
     #[tokio::test]
+    #[ignore = "live network: requires outbound HTTPS to public.api.bsky.app"]
     async fn live_fetch_smoke() {
         let fetched =
             fetch_from_url("https://bsky.app/profile/fu-futa.bsky.social/post/3laoveufjv224")

crates/x-media/src/site/mod.rs

@@ -422,7 +422,13 @@ mod tests {
     async fn download_media_pixiv_original_with_referer() {
         // Proves the Referer header is attached for i.pximg.net: a header-less
         // GET to a pixiv original URL is rejected with 403.
-        if std::env::var("PIXIV_REFRESH_TOKEN").is_err() {
+        // Empty-string check too: an unset CI secret arrives as "" (GitHub
+        // Actions), which would otherwise run the test tokenless and fail.
+        if std::env::var("PIXIV_REFRESH_TOKEN")
+            .ok()
+            .filter(|s| !s.is_empty())
+            .is_none()
+        {
             eprintln!("skipping: no PIXIV_REFRESH_TOKEN");
             return;
         }

crates/x-media/src/site/pixiv/api.rs

@@ -392,16 +392,31 @@ mod tests {
     use super::*;
     use dotenv::dotenv;
 
+    /// Skips when `PIXIV_REFRESH_TOKEN` is absent or empty (CI without the
+    /// secret must stay green; GitHub Actions exposes an unset secret as an
+    /// empty string, so `is_err()` alone is not enough).
+    fn require_pixiv_token() -> bool {
+        std::env::var("PIXIV_REFRESH_TOKEN")
+            .ok()
+            .filter(|s| !s.is_empty())
+            .is_some()
+    }
+
     #[tokio::test]
     async fn test_fetch() {
         dotenv().ok();
+        if !require_pixiv_token() {
+            eprintln!("skipping: no PIXIV_REFRESH_TOKEN");
+            return;
+        }
         let result = fetch(126839080).await;
         assert!(result.is_ok());
         println!("{:#?}", result);
     }
 
     #[tokio::test]
-    async fn validate_with_bogus_token_fails() {
+    #[ignore = "live network: requires outbound HTTPS to oauth.secure.pixiv.net"]
+    async fn live_validate_with_bogus_token_fails() {
         dotenv().ok();
         // A bogus token must surface as Api error (invalid_grant), not panic.
         let client = PixivAPI::new("bogus_token_for_testing".to_string());

crates/x-media/src/site/twitter/interface.rs

@@ -573,18 +573,21 @@ mod tests {
     }
 
     #[tokio::test]
+    #[ignore = "live network: requires outbound HTTPS to cdn.syndication.twimg.com"]
     async fn live_fetch_with_photos() {
         let fetched = fetch("861627479294746624").await.unwrap();
         assert_eq!(fetched.media.len(), 4);
     }
 
     #[tokio::test]
+    #[ignore = "live network: requires outbound HTTPS to cdn.syndication.twimg.com"]
     async fn live_fetch_text_only() {
         let fetched = fetch("1992471125734142256").await.unwrap();
         assert!(fetched.media.is_empty());
     }
 
     #[tokio::test]
+    #[ignore = "live network: requires outbound HTTPS to cdn.syndication.twimg.com"]
     async fn live_fetch_deleted_tweet_is_not_found() {
         // Deleted tweet: the syndication endpoint answers with errors.
         let result = fetch("0").await;

crates/xmedia-bot/src/send.rs

@@ -155,7 +155,9 @@ impl Task {
             Task::SendMediaSequence { media_batches, .. } => {
                 media_batches.iter().flatten().collect()
             }
-            Task::SendAnimation { animation, .. } => std::slice::from_ref(animation).iter().collect(),
+            Task::SendAnimation { animation, .. } => {
+                std::slice::from_ref(animation).iter().collect()
+            }
             Task::ForwardMessages { .. } => Vec::new(),
         }
     }
@@ -1333,9 +1335,10 @@ mod tests {
     #[test]
     fn oversized_photo_boundary() {
         // The empirical Telegram limit: sum 10000 passes, 10001 fails.
-        assert!(crate::photo::PHOTO_MAX_DIMENSION_SUM == 10000);
-        assert!(6100 + 3900 <= crate::photo::PHOTO_MAX_DIMENSION_SUM);
-        assert!(6300 + 3730 > crate::photo::PHOTO_MAX_DIMENSION_SUM);
+        // Const-block asserts so clippy's assertions_on_constants stays quiet.
+        const { assert!(crate::photo::PHOTO_MAX_DIMENSION_SUM == 10000) };
+        const { assert!(6100 + 3900 <= crate::photo::PHOTO_MAX_DIMENSION_SUM) };
+        const { assert!(6300 + 3730 > crate::photo::PHOTO_MAX_DIMENSION_SUM) };
     }
 
     #[test]