Complete HMDS no-data replies without silently retrying a day
older. Let `open_history_client()` classify the original request
and leave frame stepping to `start_backfill()`.
Distinguish `request_end_dt` from `oldest_shm_dt` so the first
frame after an empty interval retains its unwritten end bar.
Inline the storage time cutoff and drop the unused two-direction
`diff_history()` helper. Explain both dates and filtering rules.
Add request-boundary tests and real SHM/NativeDB regressions:
all 2,004 supplied bars survive, while the closure stays empty.
Prompt-IO: ai/prompt-io/codex/20260923T164656Z_efa72980_prompt_io.md
(this patch was generated in some part by `codex` using
`gpt-6` (`openai`))
Keep reverse history and stored SHM layout aligned so sparse IB
frames do not expose permanent zero-time reservations.
Deats,
- omit inclusive query endpoints from SHM but retain full storage
- serialize and bound farm resets, blanks, and cancellations
- run the final null sweep after reverse retrieval completes
- require valid timestamp boundaries for synthetic gap rows
- cover the live QQQ 653-row failure and reset interleavings
Prompt-IO: ai/prompt-io/opencode/20260729T204046Z_ad6c560f_prompt_io.md
(this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`))
Serialize aware reverse-fill boundaries as `YYYYMMDD-HH:MM:SS`
before handing them to `ib_async`.
This avoids Gateway error 10314 from its trailing-`UTC` format and
drops the unfinished EST comparison breakpoint from `Client.bars()`.
Prompt-IO: ai/prompt-io/opencode/20260729T034106Z_922a5df8_prompt_io.md
(this patch was generated in some part by `opencode` using `gpt-5.6-sol` (`openai`))
Gud Boi