sandbox:read-only (macOS Seatbelt) -- reasoning -- **Reviewing user commands** I need to review the context and understand the files thoroughly. It looks like I can't run commands or write, but I can read tools. I’ll focus on obeying the user's request to not run commands—so I'll use search, glob, and read methods instead. My goal is to inspect all relevant sources, and I might store or cache metrics and configurations for rendering or admin tasks. First, I’ll start by globbing the source and tests. I’ll trace the new sweeper against the blob-store write/index semantics and inspect each caller, configuration path, and metric rendering before reporting only line-specific defects. └ 278 tok · 43.8 tok/s · 11K ctx · 2139ms ttft · 6.4s wall ↳ glob_files: glob src/**/*.rs in pr/services/proxy └ glob_files: glob complete ↳ glob_files: glob tests/**/*.rs in pr/services/proxy └ glob_files: glob complete ↳ search_files: search pr/services/proxy/src for BlobWriter|incoming|IndexEntry|fn values|COUNTERS|admin::purge|admin::sweep|record_sweep|sweeper|cache_min_age|parse_duration └ search_files: search complete ↳ search_files: search pr/services/proxy for sweep|cache_max|CACHE_MIN|SWEEP_INTERVAL └ search_files: search complete auto-compress is on at 85% but the context window of "openai/gpt-5.6-sol" on openrouter is unknown, so this run will not compress - set AFI_SOURCE_OPENROUTER_CONTEXT_WINDOW (or pass --context-window) to enable it The search identifies two concurrency boundaries that need close checking: active writers share `incoming`, and the scheduled path uses the mutex while the HTTP path may not. I’m reading those implementations together with deletion/index behavior and metric ordering. └ 338 tok · 71.6 tok/s · 14K ctx · 2351ms ttft · 4.7s wall ↳ read_file: read pr/services/proxy/src/sweep.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/store.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/routes/admin.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/routes/cache.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/metrics.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/main.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/routes/mod.rs └ read_file: read complete ↳ read_file: read pr/services/proxy/src/config.rs └ read_file: read complete -- reasoning -- **Evaluating security and bugs** I'm noticing that the security classification seems questionable, particularly with a bug in line 164. It follows symlinks contrary to comments, leading to potential issues with storage counts, and possibly deleting target contents. I might need to report this as high security risk. Also, for the BTree sort, I’m sure that sorting by age is a definite feature. About the Tokio interval first tick, it finishes immediately, which contradicts the comment on line 101. This means it sweeps right at startup, potentially causing issues.**Checking Cargo and Rust versions** I need to inspect the Cargo lock version. There's something about Rust's `Duration::from_hours` and `from_mins` that gives me a stability concern. Cargo mentions Rust version 1.85, but it seems `Duration::from_hours` was stabilized in version 1.91? I should also double-check that Rust's standard Duration has the traditional methods like `from_secs`, `millis`, `micros`, and `nanos`. Let's look into the project’s rust-version or toolchain next. Several concrete faults are now established, including destructive dry runs and active-write races. I’m checking the repository’s Rust toolchain contract and deployment topology because the new standard-library duration constructors and cross-process/shared-volume claims may add build or coordination defects. └ 2746 tok · 75.1 tok/s · 33K ctx · 8003ms ttft · 36.6s wall ↳ glob_files: glob **/rust-toolchain* in pr └ glob_files: glob complete ↳ glob_files: glob **/Dockerfile* in pr └ glob_files: glob complete ↳ glob_files: glob **/Cargo.toml in pr └ glob_files: glob complete ↳ search_files: search pr for rust-version|FROM rust|replicas|proxy:|CAIRN_BLOB_DIR|shared volume|sharing a blob|from_hours|from_mins └ search_files: search complete ↳ read_file: read pr/services/proxy/src/config.rs └ read_file: read complete ↳ glob_files: glob **/*proxy*test* in pr └ glob_files: glob complete -- reasoning -- **Inspecting toolchain and files** I need to inspect the Rust toolchain and the Docker/deploy files. I’m wondering if Tokio version 1.53 is causing any issues, since Cargo mentions it specifically. There seems to be some uncertainty regarding the benchmarks in the future. I’ll need to check if the standard library Duration::from_hours is stabilized in 1.91 and maybe look into using toolchain version 1.93. It feels a bit complex, but I’ll get to reading about it. └ 256 tok · 67.7 tok/s · 36K ctx · 2757ms ttft · 3.8s wall ↳ read_file: read pr/services/proxy/rust-toolchain.toml └ read_file: read complete ↳ read_file: read pr/deploy/docker/proxy.Dockerfile └ read_file: read complete ↳ read_file: read pr/services/proxy/Cargo.toml └ read_file: read complete ↳ glob_files: glob **/*.{yml,yaml,toml,json} in pr/deploy └ glob_files: glob complete ↳ search_files: search pr/deploy for proxy|replica|volume|CAIRN_BLOB └ search_files: search complete -- reasoning -- **Analyzing age sorting and cache behavior** I'm considering how to sort by age, with older ages being higher and younger ones appearing first. There's no doubt about that. Regarding `mtime` usage, it should indicate the last written age, according to comments, but it's ambiguous in the config. The term “oldest” could relate to blob creation, while “nothing has wanted for longest” seems direct. It's possible that age is defined by creation or last written, but the operational aim for hot cache could suggest a defect. 🟠 `bug` services/proxy/src/sweep.rs:140: `forget` runs even for `dry_run=true`, deleting index entries and turning a supposedly non-destructive preview into cache misses and upstream refetches 🟠 `bug` services/proxy/src/sweep.rs:232: The sweep unlinks every file in `incoming` without checking age or ownership, including active artifact and index writes, causing concurrent fetches to fail during commit or link 🟠 `bug` services/proxy/src/sweep.rs:119: A newly committed blob is temporarily absent from the index before `BlobStore::link`, so a concurrent sweep treats it as orphaned, deletes it, and makes the in-flight cache request fail 🟠 `security` services/proxy/src/sweep.rs:164: `fs::metadata` follows directory symlinks, so recursive collection can escape the blob root and the sweep can delete files in the symlink target 🟡 `bug` services/proxy/src/routes/admin.rs:76: On-demand sweeps call `sweep` directly instead of the mutex-protected `run`, allowing HTTP sweeps and the scheduled sweep to overlap and over-evict the cache 🟡 `performance` services/proxy/src/sweep.rs:84: The synchronous recursive filesystem walk runs directly on a Tokio worker thread, so a large scheduled or HTTP sweep can stall unrelated requests 🟡 `bug` services/proxy/src/sweep.rs:102: Sorting elapsed ages ascending processes the newest blobs first, so capacity eviction removes recently written blobs instead of the oldest ones 🟡 `bug` services/proxy/src/sweep.rs:134: Failed deletions are still subtracted from `remaining`, counted as reclaimed, and added to `gone`, so the sweep can delete their index entries while leaving the bytes on disk and falsely report the store under its ceiling 🟡 `bug` services/proxy/src/metrics.rs:94: Sweep metric values are emitted in the reverse order of `COUNTERS`, causing the blobs-removed metric to report bytes and the bytes-reclaimed metric to report blob count 🟡 `performance` services/proxy/src/sweep.rs:186: Eviction age uses modification time, which cache reads never update, so frequently accessed old blobs are treated as cold and evicted while less-used newer blobs remain 🔵 `bug` services/proxy/src/main.rs:108: `tokio::time::interval` yields its first tick immediately, so the proxy sweeps at startup rather than waiting one configured interval as documented 🔵 `bug` services/proxy/src/sweep.rs:120: Using `remaining >= self.max_bytes` evicts a blob when usage exactly equals the configured maximum, even though the store is already within the ceiling └ 4726 tok · 65.3 tok/s · 38K ctx · 15393ms ttft · 72.4s wall