chore: improve constraint filtering for scheduling

[larsbeck]

This PR applies Timefold performance tips and tricks to the quickstart.

Summary of the following constraint profiling tables

Conference Scheduling

1. Same day talks: -0.82s (-50.93%) - from 1.61s to 0.79s
2. Language diversity: -0.25s (-26.88%) - from 0.93s to 0.68s

School Timetabling

Changes are too small and would require more datapoints to be conclusive

Details

Conference Scheduling

Before constraint improvements

	Time Spent	Of Total
Work shared by 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1...	2,16 s	7,77 %
19: Theme track room stability	2,11 s	7,59 %
33: Speaker conflict	2,05 s	7,36 %
11: Same day talks	1,61 s	5,77 %
20: Theme track conflict	1,39 s	4,98 %
30: Consecutive talks pause	1,36 s	4,86 %
18: Sector conflict	1,30 s	4,68 %
35: Room conflict	1,26 s	4,52 %
10: Popular talks	1,25 s	4,49 %
16: Audience type theme track conflict	1,19 s	4,28 %
13: Content conflict	1,16 s	4,18 %
1: Speaker makespan	1,13 s	4,04 %
14: Content audience level flow violation	1,08 s	3,89 %
31: Talk mutually-exclusive-talks tags	1,05 s	3,78 %
15: Audience level diversity	1,05 s	3,76 %
12: Language diversity	0,93 s	3,35 %
17: Audience type diversity	0,92 s	3,29 %
32: Talk prerequisite talks	0,79 s	2,83 %
34: Speaker unavailable timeslot	0,46 s	1,64 %
29: Crowd control	0,33 s	1,20 %
28: Speaker required timeslot tags	0,24 s	0,85 %
9: Speaker preferred timeslot tags	0,23 s	0,81 %
27: Speaker prohibited timeslot tags	0,21 s	0,76 %
8: Speaker undesired timeslot tags	0,20 s	0,72 %
24: Speaker required room tags	0,19 s	0,69 %
4: Speaker undesired room tags	0,19 s	0,69 %
23: Speaker prohibited room tags	0,19 s	0,68 %
26: Talk required timeslot tags	0,19 s	0,68 %
7: Talk preferred timeslot tags	0,19 s	0,68 %
2: Talk undesired room tags	0,19 s	0,67 %
5: Speaker preferred room tags	0,19 s	0,67 %
22: Talk required room tags	0,19 s	0,67 %
25: Talk prohibited timeslot tags	0,19 s	0,67 %
3: Talk preferred room tags	0,18 s	0,65 %
6: Talk undesired timeslot tags	0,18 s	0,65 %
21: Talk prohibited room tags	0,18 s	0,64 %
36: Room unavailable timeslot	0,13 s	0,47 %
Work shared by 1, 2, 3	0,03 s	0,10 %

After constraint improvements

	Time Spent	Of Total
Work shared by 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1...	2,17 s	7,80 %
33: Speaker conflict	2,16 s	7,78 %
19: Theme track room stability	2,03 s	7,32 %
20: Theme track conflict	1,45 s	5,22 %
30: Consecutive talks pause	1,44 s	5,19 %
18: Sector conflict	1,36 s	4,88 %
35: Room conflict	1,31 s	4,73 %
10: Popular talks	1,30 s	4,69 %
16: Audience type theme track conflict	1,25 s	4,51 %
13: Content conflict	1,23 s	4,44 %
1: Speaker makespan	1,17 s	4,22 %
14: Content audience level flow violation	1,14 s	4,11 %
31: Talk mutually-exclusive-talks tags	1,12 s	4,02 %
15: Audience level diversity	1,11 s	3,98 %
17: Audience type diversity	0,97 s	3,48 %
32: Talk prerequisite talks	0,82 s	2,97 %
11: Same day talks	0,79 s	2,86 %
12: Language diversity	0,68 s	2,45 %
34: Speaker unavailable timeslot	0,47 s	1,69 %
29: Crowd control	0,35 s	1,25 %
28: Speaker required timeslot tags	0,25 s	0,89 %
9: Speaker preferred timeslot tags	0,24 s	0,86 %
27: Speaker prohibited timeslot tags	0,22 s	0,78 %
8: Speaker undesired timeslot tags	0,21 s	0,76 %
5: Speaker preferred room tags	0,21 s	0,74 %
23: Speaker prohibited room tags	0,20 s	0,73 %
24: Speaker required room tags	0,20 s	0,73 %
4: Speaker undesired room tags	0,20 s	0,72 %
22: Talk required room tags	0,20 s	0,71 %
26: Talk required timeslot tags	0,20 s	0,71 %
25: Talk prohibited timeslot tags	0,20 s	0,71 %
2: Talk undesired room tags	0,19 s	0,70 %
3: Talk preferred room tags	0,19 s	0,70 %
7: Talk preferred timeslot tags	0,19 s	0,70 %
21: Talk prohibited room tags	0,19 s	0,69 %
6: Talk undesired timeslot tags	0,19 s	0,69 %
36: Room unavailable timeslot	0,14 s	0,50 %
Work shared by 1, 2, 3	0,03 s	0,11 %

School Timetabling

Before constraint improvements

	Time Spent	Of Total
2: Teacher time efficiency	5,60 s	20,92 %
6: Room conflict	5,21 s	19,45 %
4: Student group conflict	3,58 s	13,35 %
5: Teacher conflict	3,50 s	13,08 %
3: Teacher room stability	3,13 s	11,68 %
1: Student group subject variety	3,07 s	11,47 %
Work shared by 1, 2, 3, 4, 5, 6	2,69 s	10,05 %

After constraint improvements

	Time Spent	Of Total
2: Teacher time efficiency	5,67 s	21,16 %
6: Room conflict	5,17 s	19,28 %
4: Student group conflict	3,58 s	13,35 %
5: Teacher conflict	3,42 s	12,75 %
3: Teacher room stability	3,22 s	12,00 %
1: Student group subject variety	3,07 s	11,45 %
Work shared by 1, 2, 3, 4, 5, 6	2,68 s	10,02 %

Checklist

Development

• The changes have been covered with tests, if necessary.
• You have a green build, with the exception of the flaky tests.
• UI and JS files are fully tested, the user interface works for all modules affected by your changes (e.g., solve and analyze buttons).
• The network calls work for all modules affected by your changes (e.g., solving a problem).
• The console messages are validated for all modules affected by your changes.

Code Review

• This pull request includes an explanatory title and description.
• The GitHub issue is linked.
• At least one other engineer has approved the changes.
• After PR is merged, inform the reporter.