docs: translate figures in en/api and prune low-value figures

[tanghao-xiaomi]

Summary

The English API reference previously embedded Chinese figures under docs/en/api/. This PR makes the English documentation self-consistent by either replacing the figures with translated English versions, or removing low-value figures and expressing the same information inline.

Changes

Figures translated (English versions replaced)

Each of the following docs/en/api/.../figures/*.png images has been updated with an English translation (Chinese version under docs/zh-cn/ is kept unchanged):

Figure	Purpose
framework/feature/figures/JIDL.png	JIDL workflow
framework/feature/figures/feature_static.png	Static concept model of Module / Prototype / Instance
framework/feature/figures/feature_instance.png	Relationship between handles and prototypes/instances
framework/feature/figures/Asynchronous_model.png	uvloop + worker queue model
framework/telephony/figures/TapiWork.png	TAPI working sequence

Figures pruned (removed in both en/ and zh-cn/)

The following figures conveyed limited information beyond what the surrounding text already expressed. They have been removed from both language trees, and the same information is now rendered inline as concise text or tables:

Figure	Replacement
feature_framework.png	short bullet list of the architecture layers
feature_life.png	a full table documenting each lifecycle event (trigger + notes)
feature_running.png	bullet list describing Module / Prototype / Instance semantics
callback_promise_manager.png	inline description of the internal ID / table design
quickapp/basic_structure.png	Overall Architecture section removed; its information is already covered by the Related Documentation links

Markdown documents touched:

• docs/en/api/framework/feature/feature_framework.md
• docs/en/api/framework/quickapp/basic.md
• docs/zh-cn/api/framework/feature/feature_framework.md
• docs/zh-cn/api/framework/quickapp/basic.md

Verification

• Every image reference in the touched .md files points at a real file (no dead links).
• No orphaned image files remain under docs/en/api/ or docs/zh-cn/api/.
• Chinese and English versions stay structurally symmetric: both delete the same 5 figures, and the surrounding prose additions are translations of each other.

Stats

• 19 files changed
• +56 / -28 lines

Testing

Documentation-only change; no runtime tests needed.