87a40326a29533c8d52c9f9f41022e7b499b1de7
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Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
 JesseMarkowitzandClaude Opus 5
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62a997f364 |
M4: close out Save Points, with browser verification
Closes M4. The review's three findings are fixed, the durability rule the specification always implied is now enforced, and M3's and M4's browser behaviour has been verified in a real browser for the first time. B-1 -- the Save Point list was an N+1 that loaded whole Action rows, narration included, to answer "does a row exist here". It is now one bulk two-column coordinate query plus one lineage: 53 SELECTs for 25 Save Points became 5, and the count no longer grows with the list. The clause is an OR of exact (branch, depth) pairs rather than two IN lists, because the cross product would report a Save Point resolved on the strength of another one's depth existing on this one's branch. A test builds exactly that trap. B-2 -- reclassified during closeout from "missing warning" to a behaviour defect, and fixed as one. STORY-BRANCH-SEMANTICS §19 says a named checkpoint remains until explicitly deleted, and §28 already required future cleanup to retain checkpoint-referenced paths; a cascade that silently removed Save Points with a branch violated both, and a warning would only have documented the violation. A branch a Save Point names can no longer be deleted. The request is refused with the offending Save Points named, the user deletes them explicitly -- which deletes no story -- and the branch then goes. The scope is the subtree, because deleting a branch takes its descendants. Both delete controls disable and explain. Recorded as a new §19.1; models.py, TECHNICAL-DESIGN §8.8 and DATA-MODEL §8 had all recorded the cascade as the rule and now record the refusal. An earlier pass in this same closeout had kept the cascade and added a warning. That was the wrong fix and its tests were replaced rather than left standing, since they pinned the defect. B-3 -- the D11/L03 automation never left one process, so it could not distinguish durable state from a live Python object. It now spawns real server processes, kills the first, and reads the campaign back with the second. C-5 -- creating a Save Point takes the campaign's turn lock. "Save where I am" has to name one committed position, and the head is what a turn in flight is about to move. Rename and Delete deliberately do not take it. The architecture is untouched: a Save Point is still name + note + (branch, depth), and restore is still coordinate -> head.move_to_node -> head.move_to -> attempts.restore_state. No second restore path, no state copied into a checkpoint, no fork on restore. Browser verification -- the first in this project, and it covers both milestones. Firefox 154.0.1 through geckodriver over the W3C WebDriver protocol, driving the rendered DOM: 47/47 checks, twice, on independent databases, no console errors. M3's Undo/Redo enable states, transcript movement, Retry and the take pager, divergence retiring Redo; M4's whole Save Point lifecycle, both confirmations, and the new branch-delete refusal including its recovery. No dependency was added: the WebDriver client is stdlib HTTP. No application defect was found by the browser. Four failures occurred, all in the harness -- a wrong SPA route, a wait comparing transcript length when the empty-story placeholder is longer than the first turn, a fixture deleting the branch it was reading, and a reload assertion that sampled once instead of waiting. The last was checked against the app before being called a harness bug. Tests: 698 backend pass (was 680), 60 M4, 94 M3 history, 66 export/ migrations, 93 security/local-only. Frontend lint and build clean, Docker build clean, loopback binding unchanged. No assertion weakened, no skip added. Planning: STORY-BRANCH-SEMANTICS §19.1 is the only behavioural change and it strengthens §19. V1-ACCEPTANCE-TESTS records D11-D14, I04, L03 and the E-series, keeping automated, live-runtime and browser evidence distinct, and weakens no pass condition. DATA-MODEL records the coordinate with the retry measurement that settles it. BROWSER-UX-SPEC rules for Moment over Turn. BUILD-MILESTONES marks M4 COMPLETE, closes M3's browser condition, and lists what M5 inherits. VERSION adds v2.6. No new ADR: ADR 005 already decides that history is preserved rather than overwritten, and §19.1 is that decision applied to checkpoint-referenced history. M4 is closed. M5 may now be briefed; it has not been started. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PWU4gTfLYY6Qq9U7aa9Qw2 |
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JesseMarkowitzandClaude Opus 5
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e08d49c3eb |
M4: add durable named Save Points
A Save Point is a name for a story position, and restoring one is head movement. That is the whole architecture, and it is what ADR 012 and BUILD-MILESTONES' note on M4 asked for: M3 made the head a stored (branch, depth) and made arriving at one a row lookup plus a state restore, so a Save Point needs no restore machinery of its own. What the user gets: - Name the moment they are reading, keep playing, restart the app, and come back to it. Restoring moves the story back and deletes nothing: the later turns stay, Redo still walks forward into them, and writing something different is what starts a new line while the old one is kept. - Rename, delete, and a list, in a Save Points panel beside the branch panel, with a Save Point button next to Undo and Redo. Both confirmations say what is *not* destroyed, because that is the part the screen cannot show. - Save Points survive export and import. What was deliberately not built: - No second restore path. `head.move_to_node` is the only new movement: its depth half is M3's `head.move_to` unchanged, and its branch half is the single assignment `switch_branch` already makes. No head field is written in the checkpoint router, nothing reconstructs state, nothing prunes a memory, nothing copies or deletes a turn, and restore never forks — the first write below the restored head does, through `fork_if_behind_head`. - No automatic cleanup. A Save Point behind the head, or naming a line the story left, is doing its job (STORY-BRANCH-SEMANTICS §19). The one removal is a cascade: deleting a branch takes its Save Points, as it takes its memories, because the story they named went with it. - No new ADR. ADR 012 already decides the architecture, and a table is not a decision. The one call the planning package did not already make: restore moves the branch half of the head only when the coordinate is off the path being read. Doing it unconditionally would quietly hand back an abandoned continuation whenever a Save Point in a shared prefix was restored; never doing it would make a Save Point on a departed line unrestorable, which contradicts §19. TECHNICAL-DESIGN §8.8 records it. Schema: a `checkpoints` table holding a name, an optional note and a (branch, depth) coordinate — no copy of any story. `create_all` builds it as it did `memories` and `branches`; migration 80 adds the index. No backfill, because nobody had named a position before M4. The coordinate is deliberately not an action id: one coordinate holds every attempt at a turn and exactly one is live, so a coordinate follows a retry where a row id would pin a take the story no longer tells. Tests: 680 pass (638 before). 42 new in tests/test_save_points.py covering D11-D14, I04, L03, E-series lineage and memory isolation after restore and divergence, the edge cases, and an M3-database migration. One pre-existing fixture in test_tree_migration.py needed `checkpoints` added to its drop list — SQLite refuses to drop a table another table references. Not verified: the browser. No session has had a usable one, so the Save Point panel's DOM behaviour is unobserved — as M3's Redo control still is. The twenty-step sequence was driven over HTTP against a live server with a real process restart instead, and all seventeen checks pass. M4 is implemented, not accepted: no review has been written. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01PWU4gTfLYY6Qq9U7aa9Qw2 |