loopflow 0.9.11

Run steps and flows with coding agents
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150

use std::path::{Path, PathBuf};

use anyhow::{anyhow, Result};
use time::OffsetDateTime;
use tracing::{debug, info, warn};

use crate::engine::agent::{build_agent_command, AgentCapabilities, AgentConfig, ProcessConfig};
use crate::engine::builtins::get_builtin_ops_prompt;
use crate::engine::config::load_config_or_default;
use crate::engine::flow::{ConcreteStep, Step};
use crate::engine::git::hash_areas;
use crate::lfd::id::LfdId;
use crate::lfd::types::{Summary, Wave, WaveRun};

use super::launch::AgentLaunchRequest;
use super::WaveExecutor;

impl WaveExecutor {
    /// Check if the wave's area summary is fresh; regenerate if stale or missing.
    pub(crate) async fn ensure_summary_fresh(&self, wave: &Wave, run: &WaveRun) -> Result<()> {
        if wave.area().is_empty() {
            return Ok(());
        }

        let worktree_path = Path::new(&run.worktree);
        let current_hash = match hash_areas(worktree_path, wave.area()) {
            Ok(h) => h,
            Err(err) => {
                warn!(wave = %wave.name(), error = %err, "failed to hash areas, skipping summary");
                return Ok(());
            }
        };

        if let Ok(Some(existing)) = self.store.get_summary(wave.id()).await {
            if existing.source_hash == current_hash {
                debug!(wave = %wave.name(), "summary is fresh");
                return Ok(());
            }
            info!(wave = %wave.name(), "summary is stale, regenerating");
        } else {
            info!(wave = %wave.name(), "no summary found, generating");
        }

        self.run_internal_summarize(wave, run, &current_hash).await
    }

    /// Run the builtin summarize step as an internal agent and store the result.
    async fn run_internal_summarize(
        &self,
        wave: &Wave,
        run: &WaveRun,
        source_hash: &str,
    ) -> Result<()> {
        let template = get_builtin_ops_prompt("summarize")
            .ok_or_else(|| anyhow!("builtin summarize prompt not found"))?;

        let config = load_config_or_default(Some(Path::new(&run.worktree)));
        let token_budget = config.summary_tokens;

        let area_list = wave.area().join(", ");
        let prompt = template
            .replace("{token_budget}", &token_budget.to_string())
            .replace(
                "{content}",
                &format!("Read and summarize these paths: {area_list}"),
            );

        let agent = config
            .agent
            .clone()
            .unwrap_or_else(|| "claude:opus".to_string());
        let launch = AgentConfig {
            task_prompt: prompt,
            agent: Some(agent.clone()),
            cwd: Some(PathBuf::from(&run.worktree)),
            skip_permissions: config.yolo,
            ..Default::default()
        };
        let process = ProcessConfig {
            auto: true,
            stream: true,
            ..Default::default()
        };
        let capabilities = AgentCapabilities {
            chrome: config.chrome,
        };

        let cmd = build_agent_command(&launch, &process, &capabilities);
        info!(wave = %wave.name(), agent = %agent, "running internal summarize step");

        let step = ConcreteStep {
            step: Step {
                name: "_summarize".to_string(),
                agent: Some(agent.clone()),
                default_agent: None,
                directions: Vec::new(),
                action_style: None,
                interactive: Some(false),
                content: None,
                fast_path: None,
            },
            flow_parents: Vec::new(),
        };

        let outcome = self
            .launch_agent(AgentLaunchRequest {
                wave_id: wave.id().clone(),
                wave_run_id: run.id.clone(),
                branch: Some(run.branch.clone()),
                repo: run.snapshot.repo.clone(),
                worktree: run.worktree.clone(),
                step,
                agent: agent.clone(),
                cmd,
                output_prefix: None,
                extra_env: Vec::new(),
            })
            .await?;

        if outcome.exit_code != 0 {
            warn!(wave = %wave.name(), exit_code = outcome.exit_code, "summarize step failed, continuing without summary");
            return Ok(());
        }

        let summary_path = Path::new(&run.worktree).join(".lf/summary.md");
        match std::fs::read_to_string(&summary_path) {
            Ok(content) if !content.trim().is_empty() => {
                let summary = Summary {
                    id: LfdId::new(),
                    wave_id: wave.id().clone(),
                    content,
                    source_hash: source_hash.to_string(),
                    token_budget: token_budget as u32,
                    agent,
                    created_at: Some(OffsetDateTime::now_utc()),
                };
                self.store.upsert_summary(&summary).await?;
                info!(wave = %wave.name(), "summary stored");
            }
            Ok(_) => {
                warn!(wave = %wave.name(), "summarize step produced empty output");
            }
            Err(err) => {
                warn!(wave = %wave.name(), error = %err, "failed to read summary file");
            }
        }

        Ok(())
    }
}