8 Commits

Include renames

Author	SHA1	Message	Date
shadow-testandClaude Opus 5	eead748222	Close what two reviews found in the Files tab transfers ... Two independent reviews of 2c9482a, one for correctness and one against the threat model. Between them they found two ways to lose a file, one way for a container to choose a Windows save destination, and a rule that made every dotfile unsavable. Every finding below was demonstrated against a real container before being fixed, and the fixes are demonstrated the same way. ## The download was accepting truncated reads and refusing whole ones The `[ -f ]` bracket around the read was wrong in both directions. It missed the case that loses data. Truncation *in place* — `> file`, log rotation, `tar -x`, most build tools — leaves a regular file behind, so `dd` stopped at the new EOF and exited 0. Measured: a 600 MB source truncated mid-read delivered 34 MB, which was then renamed over the user's own earlier copy and toasted as `Saved (34.1 MB)`. Truncate-to-zero did the same and needs no adversary at all. And it failed *good* downloads. `dd` already holds the fd, and neither `rm` nor `mv` can touch an open one — the bytes are complete. But `rm` makes `[ -f ]` false, so a finished 600 MB transfer of a file a bundler happened to unlink was deleted, reporting "nothing was saved". The comment claiming the bracket caught a "mix of two files" was simply wrong; an open fd cannot be a mix. So the script now measures the file before reading it and puts the answer on stderr, and Rust checks that at least that many bytes arrived. One rule, subsuming everything the bracket was for. Verified against a real container: truncation mid-read and the FIFO race are refused; deletion, rename-over, a growing file, an empty file and an untouched 600 MB read all pass. ## On Windows the container, not the user, was naming the save destination `suggested_save_name` split on `/` only, and it feeds the save dialog's pre-filled name. Backslash is a legal Linux filename character and `validate_container_path` has no reason to object — `..\..\Users\…` is one POSIX segment. The Windows common file dialog parses its name box as a path on Save, so a container-created file called `..\..\..\Users\vic\AppData\Roaming\Microsoft\Word\STARTUP\x.dotm` put its own bytes in an auto-loading Office directory on one un-read click. `resolve_host_path` did not stop it: Word's `STARTUP` and Excel's `XLSTART` are not in the autorun denylist, which this file's own docs already concede is "losing by construction" and was never meant to be the boundary here. The name is now sanitized of every separator, the drive colon and the rest of what NTFS refuses, so it cannot be a path on any platform this ships to. ## No dotfile could be saved, and the app pre-filled the name that guaranteed it The write policy judged the leaf for hiddenness, so `/workspace/.env` was refused *after* the modal and the overwrite prompt — quoting the name the app itself had suggested. `.gitignore`, `.dockerignore`, `.eslintrc.json`, `.nvmrc`: all unsavable, while uploading them worked, so a dotfile could go in and never come out. `HostPathUse` gains a third mode. `WriteChosenName` drops the leaf check and keeps every directory rule, and only `download_container_file` uses it — the dialog is a real boundary for that caller and only that caller. `download_container_backup` still takes its path over IPC as a string and keeps the strict rule. ## Smaller, all found by the reviews * A download had no ceiling. `dd` resolves through the container's `PATH`, which its agent owns with passwordless sudo; a replacement writing forever was measured at ~6 GB/s, so one click on a file listed as 2 KB filled the host disk with no progress shown and no cancel. Bounded now by what the file measured, with slack that is absolute for small files and proportional for large ones, so an honest growing log is unaffected. * "Framed rather than verbatim" did not stop container text reaching the toast headline: `readableRefusal` matches with `includes`, and it has to, because the app's own refusals carry those markers mid-sentence. Anchoring would break them. The fix is at the injection point — container text is clipped to one 200-character line with control characters stripped — plus a `max-h-40` on the toast message, which the `detail` block always had and this half did not. 8 KB of prose in a `z-[60]` card pushed its own dismiss button off-screen. * `savingPath` was a scalar while the design deliberately allows concurrent saves. Starting a second freed the first's row mid-transfer, and whichever finished first cleared both; dismissing the second dialog was enough. It is a `Set` now. * `setUploading(false)` fired when the command settled, not when the refresh finished, so a second click landed mid-relisting. * `upload_files_to_container` checked the container directory before the picker and then used the unresolved path. A modal has no time limit. It re-checks after, which is what `docker::exec`'s doc comment already claimed. * `wait_for_exec_exit` flattened a missing exit code to `Some(0)`, which made the new `!= Some(0)` check unreachable by construction. * `normalize_host_path` did not collapse repeated separators, so the lexical system-root rule was silently absent for `C:\\Windows\…`. Not exploitable — the resolved pass catches it — but a documented layer that does nothing is a trap for the next caller. * README still carried the "no host path crosses IPC in either direction" claim the previous commit narrowed everywhere else, and HOW-TO-USE described the hidden rule without saying it applies to folders only. 480 Rust tests, 602 frontend, no new clippy warnings. Eleven mutations against the new tests, all killed — two of the first round survived and were rewritten: one because `split_whitespace` already handled the case I thought I was testing, one because I had deleted a comment rather than the behaviour. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LHL9ty7arp8FHwvE77ne7y	2026-08-25 10:42:26 -07:00
shadow-testandClaude Opus 5	2c9482a67d	Give the Files tab back its uploads and downloads ... `upload_file_to_container` and `download_container_file` existed on main before any of this work started. "Ship the Files tab container-side only" removed them and called it narrowing scope; from a user's side it was a regression they upgraded into. This restores the feature. The reason for the removal was real — four consecutive audits found their criticals in host paths crossing IPC — so the feature comes back only in the shape that removes the class rather than patching it a fifth time. The dialogs are opened by **Rust** (`pick_save_path`, `pick_files_to_upload`), not by the webview. A frontend `open()`/`save()` handing the backend a path string is exactly what failed, and the backend cannot tell such a string from one a compromised webview invented. Now the webview can ask for a picker and that is the whole of its influence: it cannot name a host path as an input. That is the shape the previous round's own notes named as the honest one if this ever returned. None of the machinery the audits condemned returns. No `link(2)` destination reservation, no placeholder rollback, no collision marker: the OS save dialog already asks about overwriting and Docker's extractor overwrites on upload the way `cp` does, so there was nothing left for it to do. Download reuses the sequence `download_container_backup` has been using unchanged — resolve, stream into a partial file beside the destination, rename last — so a failed transfer never touches the file that was already there. Upload reuses the terminal drop's hardened uploader, with the container's uid/gid resolved once per selection rather than once per file. Against a container that is actively hostile rather than merely surprising: * the read is `dd iflag=nonblock`, not `cat`. `[ -f ]` and the `open` after it are two syscalls and the container owns the filesystem in between; a loop swapping the file for a FIFO wins that race, and `cat` then blocks forever with no writer and no timeout anywhere on the path — the `invoke` never settles and a partial is left in the user's directory for good. Verified in a real container that `cat` hangs, that `iflag=nonblock` returns, and that it is byte-identical on a regular file. * the read is bracketed by a second `[ -f ]`, because non-blocking turns that hang into an empty file that would otherwise be renamed over the destination and reported as a successful save. * an *undeterminable* exit code is a failure. Backup catches this class with its `total == 0` check, which download cannot have because an empty file is a legitimate save; without a replacement, a project restarted mid-download renames a truncated partial over the user's file and reports the byte count as if it were whole. * container stderr is capped. Every other reader of container output in the tree is capped for this reason; the two streaming commands were the exception, and stdout was bounded by disk while stderr was bounded by nothing. * the script's refusals are framed rather than used verbatim, so a directory named to look like one of our own sentences cannot become the toast headline through `readableRefusal`. * the partial name is capped at NAME_MAX. A bundler's 230-character content hash is a name that fits its directory and produces a partial name that does not. Also: a non-UTF-8 dialog path is refused by name rather than silently mangled into a different path by U+FFFD substitution; both actions carry in-flight state, so a second click cannot open a second dialog and a slow save is not indistinguishable from a dead button; and the upload's completion message names the directory, since the picker is modal and the user can browse elsewhere while it is open. Not restored: drag-and-drop, in either direction. `drag:allow-start-drag` stays ungranted and `hold/disk-and-dragout` still holds that work. Two bugs the new tests caught while being written: a double-click on "Save to host…" opened the file viewer on top of the save dialog, and an N-file upload made N redundant execs to re-ask `id -u`. Docs that asserted this feature did not and must not exist are corrected — CLAUDE.md, README, HOW-TO-USE, TECHNICAL and the capability threat model. The "no host path crosses IPC" claim is deliberately narrowed to the inbound direction: paths do still travel outward inside error text, canonical ones included, and the reviewed record should not overstate. 600 frontend tests, 473 Rust, no new clippy warnings. Every new test was mutation-checked; four that survived their first mutation were rewritten, including two whose mutations turned out to be unfaithful and one that was blind to a dismissal leaving a row stuck on "Saving…". Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LHL9ty7arp8FHwvE77ne7y	2026-08-25 10:00:21 -07:00
shadow-testandClaude Opus 5	06ccb4d818	Ship the Files tab container-side only ... Four successive audits found the same thing: host filesystem paths crossing IPC is where the criticals in this work live. The most recent one found the `link(2)` upload reservation returning success against a *directory* (linking into it, leaving permanent stray files, and via a symlink-to-directory writing outside the validated write root), failing every upload permanently on any filesystem without hard links, and the post-resolution credential check weakened from a general rule to an eleven-name denylist. Rather than fix that a fifth time, the Files tab ships as what it is good at: a browser, viewer and renamer that never touches the host. Removed: `upload_file_to_container`, `download_container_file`, and everything that existed only for them — the whole reservation (`UPLOAD_RESERVATION_SCRIPT`, `reserve_upload_destination`, the placeholder rollback, `exec_oneshot_as_within` which had no other caller), `stream_container_file_to_host`, `ChannelReader`, `save_to_host`, the download ceiling, and the collision marker with its frontend contract. On the frontend: the upload button, the pane's `onDragDropEvent` handler, both "Save to host…" affordances, `uploadPaths` / `downloadFile` / the overwrite prompt, and `OverwriteConfirmModal`. `lib/uploadErrors.ts` is now `lib/refusalText.ts` and keeps only the half that turns any backend refusal into the sentence a person reads. Kept, and not weakened: `upload_host_file_to_terminal` and `download_container_backup`. They predate this work, their hardening is a real improvement over main, and they are now the whole answer to "how do I get a file in or out" — drop it on the Terminal, or Back up container. The drop gate (`lib/dropTarget.ts`, `PaneVisibility`) is untouched. `resolve_host_path` gets the general hidden-component rule back. Round 3 replaced it with `HOST_CREDENTIAL_DIRS`, which is allow-by-omission for the rest of `$HOME`: `~/.local/bin` (write there and you own the user's next shell command), `~/.password-store`, browser profiles and `~/.pki/nssdb` were all reachable through a planted symlink with a visible name — verified against a real home directory, and all five refused now. It over-catches `.pnpm` and `~/.cache`; for two occasional callers that is the cheaper mistake, and the refusal says which folder it resolved through. Two defects fixed while in here: * A symlinked directory listed as empty. `find` defaults to `-P`, which does not follow a symlink even as the starting point, so `-mindepth 1` discarded the only match and a real directory rendered as "Empty directory" — a first-order defect now that browsing *is* the feature. `-H` follows the starting point and nothing else, so a loop is `ELOOP` rather than a walk that does not end; verified against a live container for a symlinked directory, a broken link and a loop. `find`'s errno for the loop case is now a sentence. * `finish_download`'s replace path fired on *any* rename failure with a destination present — a vanished partial, a permission error, a directory at the destination — and deleted the user's file to complete a move that could not complete. It is now fenced to Windows (where a rename onto an existing path genuinely fails) and to a partial that still exists. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 17:05:56 -07:00
shadow-testandClaude Opus 5	ed91423666	Hold back the Disk panel and OS drag-out from the ship branch ... This is a scope reduction, not an abandonment. Both subsystems are preserved in full on `hold/disk-and-dragout` and are intended to come back once they have been hardened separately. Nothing here is a judgement that the features are unwanted — three successive audit-and-fix cycles each closed a critical defect in these two areas and each opened a new one, so the rest of the round ships now and these two get their own cycle rather than holding it up. Removed: the Disk settings panel and its whole reclaim / destroy / compaction surface — `DiskSettings`, `DiskProjectTable`, `useDiskUsage`, `docker/disk.rs`, `disk_tests.rs`, the disk commands in `docker_commands.rs`, and their `generate_handler!` entries. Dropping the IPC entries is the point: a UI-only removal would have left five commands callable by a compromised webview, one of them a verified arbitrary-DELETE primitive. `sweep_orphaned_snapshots`'s *command* goes with them (the panel was its only caller); the sweep itself stays. Removed: OS drag-out from the Files tab — `stage_container_file_for_drag` and its host staging lifecycle, the pointer gesture and `dragPreview`, `stageForDrag` / `isStagedHostPath`, the `tauri-plugin-drag` and `@crabnebula/tauri-plugin-drag` dependencies, and the `drag:allow-start-drag` capability grant, which could not be scoped. The capability test's expected list is updated; its `*:default` and `store:*` assertions are untouched. Kept, deliberately: drag-and-drop *into* the app (Files pane and terminal) and "Save to host…", which is now the only route out of a container. The prevention work is untouched — the pre-commit scrub and `SNAPSHOT_SCRUB_PATHS`, capped container logs, the `triple-c.base` / `triple-c.managed` labels, `sweep_orphaned_snapshots` and the startup housekeeping, the migration pin/probe reapers, scheduler log pruning, `formatBytes.ts`, and `project_lock.rs` in full with every acquisition site outside `disk.rs`. Entanglements, resolved rather than deleted blind: * `container.rs`'s `a_compaction_runs_this_module_s_scrub_script_byte_for_byte` pinned the compaction Dockerfile against `snapshot_scrub_script()`. Dropped — it existed only for compaction. `snapshot_scrub_script` and its containment tests are untouched. * `lib.rs`'s startup reap of `:compacting` tags and `triple-c-compact-*` containers is dropped: nothing on this branch creates them. * `project_lock`'s `Compaction` / `CacheClear` variants and `any_held_excluding`, `migration_commands::is_migrating`, and `formatBytes{Delta,Ceiling}` lose their last production caller but are kept and still tested, annotated with why. * `projects_store::corrupt_since` and `migration_store::peek_ownerless_since` were read only by the disk survey and are removed. The corrupt-load marker and `.bak` are still written. Verified: `npm run test` 611 passing, `npx tsc --noEmit` clean, `npm run build` green; `cargo test` 419 passed / 2 ignored, `cargo build` 0 warnings. Every test removed belongs to a removed feature — no kept-behaviour test was weakened or deleted. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 15:20:22 -07:00
shadow-testandClaude Opus 5	7e1f8df1ff	Reconcile the frontend with the round-1 backend contracts ... Five backend branches merged and the TypeScript still compiled, because none of this is a type error: a field that arrives `undefined`, a variant nothing emits any more, a prompt whose loop never closes. Six things. **Orphaned volumes are destructive now, not safe.** `ReclaimTarget:: OrphanVolume` is gone from Rust; the object is a `DestructiveTarget:: OrphanVolume { name, project_id }` confirmed against the *volume's* name, there being no project to name. The TS union still listed it under `ReclaimTarget`, and — worse — `DiskProjectTable` keys destructive items off `project_id`, which an orphan's never matches. So the item existed in the plan and appeared nowhere on screen. `DiskSettings` now splits the plan's destructive list and gives orphans their own section with a per-volume `TypedConfirmModal`. The copy says what a `triple-c-claude-config-*` volume actually is — a Claude login credential, every plugin and skill, every transcript that project had — and keeps the sentence explaining that "no matching project" is a lookup against the project list and is never inferred from a project being stopped or having no image, which is the inference that once flagged two live projects. `TypedConfirmModal` grew a `subject` prop: asking a user for "the exact project name" of a volume that has no project is asking for a string that does not exist. **Snapshot and Total reconcile.** `ProjectDiskRow.snapshot_attributed_bytes` is the single figure `snapshot_attribution()` exists to produce. The column rendered `snapshot_above_base_bytes` and fell back to `—` while the Total was `size - shared` regardless — and in that branch `size - shared` is the whole 4.7 GB base image, charged per project and then added again as a base-image row. One field, one rule. The one branch where the figure *is* the whole image says so rather than passing itself off as a share. **The overwrite loop closes.** Traced end to end: a `FILE_EXISTS:` refusal raises the prompt, Replace re-invokes with `overwrite: true`, Skip advances, "…all" answers the rest without asking, and picker and host-drop both reach `uploadFileToContainer` through `uploadPaths`. Two gaps: a second batch's `askOverwrite` overwrote the first's resolver, leaving that batch awaiting an answer no dialog could produce; and the backend's written refusals — a hidden host folder, a path outside the write roots — were passed as a toast `detail`, which `ToastHost` renders as collapsed monospace behind a "Details" button, so the only sentence that explained anything was the part nobody saw. `readableRefusal` promotes it to the headline when a batch failed the same way. **The browser pane's sandbox is pinned.** `allow-same-origin` must stay (the proxy's gate reads `Origin`/`Referer`, and an opaque origin sends `null`); every top-navigation grant and `allow-popups-to-escape-sandbox` must stay absent, and the test names the offending token rather than printing a set diff. **`@tauri-apps/plugin-store` is gone** from `package.json` — its capability grants were removed as a host-file-write primitive and nothing in `app/src` imports it. The lockfile was updated with `--package-lock-only`, deliberately: `node_modules` is a symlink shared with other worktrees and a real install would have pulled it out from under them. Nothing under `src-tauri/` is touched. 663 frontend tests pass (was 635), `tsc --noEmit` clean, `npm run build` green, `cargo test` 446 unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 12:02:34 -07:00
shadow-testandClaude Opus 5	d6f065a2b6	Fix HIGH and MEDIUM frontend defects ... Files pane - F16: a drag-out released back inside the app no longer re-imports its own staged copy over the container original. An in-flight flag (cleared from the drag plugin's `onEvent` channel, with a watchdog) suppresses the drop and the "Drop files into …" hint, and an exact staged-path filter is the second line of defence — the `path|size|modified` cache could otherwise write a minutes-old snapshot over a file an agent had since rewritten. - F17: a slow upload/rename no longer yanks the user back to the directory the operation started in. Every operation captures its target path and re-lists only if the user is still there; failures go to the toast host either way. - The grid keeps keyboard focus. Roving tabindex (one tab stop, not one per row) plus focus restore after navigation, rename commit/cancel and Escape. - Transient failures now surface in `ToastHost` (z-[60], persistent aria-live) instead of a `role="alert"` 300 rows down a scroller or behind a modal overlay. The inline error is kept only for the listing failure. - `navigate` is sequenced by generation; "Save to host…" sets `busy`. - Grid a11y: column headers, a text affordance for folder vs file, a live region that is mounted empty and announces completion, Label-in-Name fixed. - FileViewerModal: the blob URL is released only once its replacement exists; the preview is a focusable, named, scrollable region. Native drop routing - New `lib/dropTarget.ts`: the hit test now refuses a drop while any `[aria-modal="true"]` dialog or `[data-blocks-drop]` overlay is up, and checks z-order where the environment can answer it. Shared by FilesTab and TerminalView; App's shutdown overlay opts in. Disk - A partially failed reclaim says so in words ("… — 2 of 5 failed"), not by hue alone. - The scan/reclaim race is closed: every mutation retires an in-flight scan, so a scan can no longer repaint a pre-reclaim report plus a clickable plan of objects that are gone. Scan is disabled while working; the status is a live region; a failed destructive action keeps its dialog open and reports there. - The "unknown" layer count gets a screen-reader fallback; `--text-disabled` no longer carries live information. Terminal / OAuth - After the toast is dismissed, a truncated heuristic guess can no longer fill the slot that an exact OSC 8 or relay URL occupied — the detector remembers every exact URL and drops any candidate that is a strict prefix of one. - The prompt is reachable by keyboard: Ctrl+Shift+O jumps to the default action, Escape dismisses, focus returns to the terminal, and auto-dismiss holds off while focus is inside. It deliberately does not steal focus. - UrlToast renders through `ui/Button` and `--shadow-overlay`. Elsewhere - AuthBridgeRow: a pushed `auth-bridge-changed` status always outranks an older awaited toggle result. - The last two ad-hoc byte formatters route through `lib/formatBytes`. Contract for the backend agent: `upload_file_to_container` refusing to overwrite must satisfy `isFileExistsError` in `src/lib/uploadErrors.ts` (marker `FILE_EXISTS`) and accept an `overwrite` argument; the frontend turns that into an `ui/Modal` Replace/Skip prompt rather than a raw error string. Tests: 536 -> 627 passing. `npm run build` and `npx tsc --noEmit` green. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 11:11:43 -07:00
shadow-testandClaude Opus 5	1c834a0b08	Drag a file out of the Files tab onto the host desktop ... The Files tab could accept a drop but never produce one: getting a file out meant "Save to host…" and a file picker. This adds the other direction. Two constraints shape it. `dragDropEnabled` is on — TerminalView needs it, since the native drag-drop event is the only one carrying dropped file paths — and it blocks HTML5 drag inside the webview, so `draggable` plus `DataTransfer.setData("DownloadURL", …)` was never available. The gesture is therefore pointer events into `tauri-plugin-drag`, the same shape and the same reason as the tab strip's drag. And the file being dragged does not exist on the host at all: it lives in a container, and the OS can only drag a real host path. So a drag-out is a copy first and a drag second. `stage_container_file_for_drag` materialises the file into `<os-temp>/triple-c-drag-out/<session>/<slot>/<name>` through the same `fetch_container_file` the download and the viewer use, keeps the original filename (a dropped `tmp1234` is not a file anyone wants), and caps at the 256 MiB an upload already caps at, naming "Save to host…" in the refusal. The path comes from Tauri's path API rather than `/tmp`, because on Windows it is neither. The staging directory has a lifecycle, because whole files accumulating in the host temp dir would be the disk problem this project just fixed, in a new place: cleared on exit inside the existing teardown (still guarded on the main window), and reaped at startup for whatever a crash left behind. The copy is also an async gap in the middle of a gesture that feels instantaneous, and the OS only adopts a drag while the button is still down. Small files beat the pointer; large ones do not — so the staged path is cached per entry (keyed on size and mtime, so an edited file re-stages) and the pane says the copy is ready and to drag again, which is an instruction rather than an apology because the retry is immediate. A per-file slot keeps `a/notes.txt` and `b/notes.txt` from becoming the same host path. "Save to host…" stays exactly as it was. Drag-out is the enhancement; a platform that refuses `startDrag` says so and points back at it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 09:12:59 -07:00
shadow-testandClaude Opus 5	15e05e2197	Turn the Files tab into a real file manager ... Rename, an in-app viewer for text and images, host-to-container drag and drop, New folder, keyboard operation — plus the pre-existing bugs the new surface would otherwise have been built on top of. New Tauri commands (file_commands.rs, registered in lib.rs): * rename_container_path — `mv -n -- <from> <parent>/<name>` through exec_oneshot_as, so the *exit code* is checked. exec_oneshot discards the status and interleaves stderr into stdout, which would have made a permission failure look like a success. `mv -n` on its own is not enough either: GNU coreutils makes its refusal to clobber silent and exits 0, so an explicit `test -e` on the destination is what turns a name clash into an error the user sees. `mv`'s own words are surfaced, since renames outside /workspace legitimately fail on permissions. The new name is validated in Rust (no `/`, no NUL, not "." / ".." / empty, ≤255 bytes) — it is user text going into argv, and a name with a separator would be a move rather than a rename. * read_container_file — exact bytes via Docker's archive endpoint, returned as base64. Deliberately not exec_oneshot, which runs every chunk through String::from_utf8_lossy and merges stderr, so it would corrupt any non-UTF-8 file and could splice diagnostics into content. Base64 rather than Vec<u8> because Tauri serialises a byte vec as a JSON number array. Capped and truncation-reporting; the caller picks the cap (images get 5 MiB against text's 1 MiB, being the kind that blows a text-sized budget) and Rust clamps it to 8 MiB regardless. * create_container_directory — `mkdir` without -p, so a clash is an error rather than a silent success. Named for its siblings rather than the bare `create_directory` in the brief. The tar-extraction half of download_container_file is now the shared fetch_container_file() both commands use, and it abandons the transfer once a capped read has what it needs. Frontend: * Single click selects, double click opens. Directory navigation moved onto double click too — a single click used to navigate, which made it impossible to select a directory in order to rename it. Rows are now focusable and the table is a real `grid`: Enter opens, F2 renames, arrows walk the rows. No outline suppression; the global :focus-visible ring is what shows focus. * FileViewerModal (built on ui/Modal, the only correct dialog) renders text in a <pre> and images from a revocable blob: URL. tauri.conf.json's img-src had neither `data:` nor `blob:`, so an in-app image was blocked by CSP; `blob:` is added — revocable, and no megabytes of base64 in the DOM. The asset protocol stays disabled. Anything else gets a "Save to host" state instead of a broken preview, decided by extension and then by sniffing the bytes for NUL. * Host drag-and-drop uses Tauri's native onDragDropEvent, mirroring TerminalView: HTML5 ondrop carries no paths and is blocked in the webview on Windows by dragDropEnabled, which the terminal needs. The listener is window-wide, so it routes by hit-testing the payload position (physical pixels, hence the devicePixelRatio divide) against the pane's rect — a hidden pane has a zero-size rect and never matches, which is what keeps this and the terminal's listener apart. enter/over/leave drive a drop highlight. * Per-row Download is now "Save to host…"; directories no longer offer it. Pre-existing bugs fixed: * Uploaded files landed root:root with a 1970 mtime. tar::Header::new_gnu() zeroes uid/gid/mtime and Docker honours the header verbatim, so uploads were not writable by `claude`. All four single-file tar builds now go through build_single_file_tar() with the container user's ids, read from the container because entrypoint.sh remaps them to the host user on Unix and deliberately does not on Windows. * Symlinked directories could not be opened: `find -printf '%y'` reports `l`. The listing now prints `%Y` as well, so is_directory dereferences and a new is_symlink carries what `%y` used to say. The row labels the link. * upload_file_to_container had no size cap and did a synchronous fs::read on an async worker. Now 256 MiB (matching the terminal drop path) with the read and tar build in spawn_blocking, and the host mtime preserved. * A directory passed to upload reached fs::read and produced an opaque "Is a directory". Rejected with an explanation instead — recursive upload is a larger feature than this panel needs. * download_container_file wrote the *first tar entry*, so downloading a directory silently produced a garbage file. Non-regular entries are now an explicit error. Tests: 46 new (33 frontend across FilesTab, useFileManager and filePreview; 12 Rust covering the find-output parser and the rename validator, neither of which had any). 405 frontend / 297 Rust, both green. No drag-out dependency was added — tauri-plugin-drag is not introduced and OS drag-out is not attempted; that stays deferred, with "Save to host…" as the way files leave the container. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GBq2rGum6GX7xXgsas1fDc	2026-08-23 08:30:48 -07:00